LAFCO
4-m Water District MSR and SOI*
Read the report at Local Agency Formation Commissions ↗
4-M WATER DISTRICT
MUNICIPAL SERVICE REVIEW
AND
SPHERE OF INFLUENCE
COLUSA LAFCO
Adopted
Service Review: LAFCo Resolution 2016-0001
Sphere of Influence: LAFCo Resolution 2016-0002
February 4, 2016
Adopted 4-M Water District MSR-SOI
Colusa LAFCO Feb 3, 2016
MSR: Resolution 2016-0001
SOI: Resolution 2016-0002
TABLE OF CONTENTS
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 LAFCO's Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Municipal Service Review Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 LAFCO Policies and Procedures Related to Municipal Services . . . . . . . . . . . 2
1.4 Description of Public Participation Process . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 California Environmental Quality Act (CEQA) . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Colusa County . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.1 Colusa County Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.2 Colusa County Population . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.3 Colusa County Employment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1.4 Colusa County Agriculture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Central Valley Project and the Tehama-Colusa Canal . . . . . . . . . . . . . . . . . . . 4
2.3 Colusa County Water Rights from the T-C Canal . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Colusa County Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 4-M WATER DISTRICT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 4-M Water District Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1.1 4-M Water District History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1.2 4-M Water District Acreage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1.3 4-M Water District Board of Directors . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.4 4-M Water District Contact Information . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.5 4-M Water District Population . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 4-M Water District Crops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 4-M Water District Soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 4-M Water District General Plan and Zoning Designations . . . . . . . . . . . . . . . 9
3.5 Service Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.6 Finances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6.1 Budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6.2 Audit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 MUNICIPAL SERVICE REVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Growth and Population Projections for the Affected Area . . . . . . . . . . . . . . . 16
4.1.1 Population Growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.2 MSR Determinations on Growth and Population for
4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Location and Characteristics of any Disadvantaged Unincorporated
Communities (DUC) within or Contiguous to 4-M Water District . . . . 17
4.2.1 Determination of 4-M Water District Area Disadvantaged
Unincorporated Community Status . . . . . . . . . . . . . . . . . . . 17
4.2.2 MSR Determinations on Disadvantaged Unincorporated
Communities near 4-M Water District . . . . . . . . . . . . . . . . . . 17
4.3 Capacity and Infrastructure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.1 Infrastructure Background 4-M Water District . . . . . . . . . . . . . . . . . . . 17
4.3.2 MSR Determinations Regarding Capacity and
Infrastructure for 4-M Water District . . . . . . . . . . . . . . . . . . . 17
4.4 Financial Ability to Provide Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.1 Financial Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.2 MSR Determinations on Financial Ability for 4-M Water District . . . . 18
4.5 Opportunities for Shared Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.5.1 Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.5.2 MSR Determinations on Shared Facilities for 4-M Water District . . . . 19
4.6 Accountability for Community Service Needs, Governmental Structure and
Operational Efficiencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.1 Government Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
i
Adopted 4-M Water District MSR-SOI
Colusa LAFCO Feb 3, 2016
MSR: Resolution 2016-0001
SOI: Resolution 2016-0002
4.6.2 MSR Determinations on Government Structure and
Accountability for 4-M Water District . . . . . . . . . . . . . . . . . . 20
5 SPHERE OF INFLUENCE FOR 4-M WATER DISTRICT . . . . . . . . . . . . . . . . . . . . . 21
5.1 SOI Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.1 LAFCO's Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.2 Sphere of Influence Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.3 LAFCO Policies and Procedures Related to Spheres of Influence 22
5.1.4 Description of Public Participation Process . . . . . . . . . . . . . . . . . . . . 22
5.1.5 Possible Approaches to the Sphere of Influence . . . . . . . . . . . . . . . 22
5.1.6 SOI Update Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.7 SOI Amendments and CEQA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 Land Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2.1 Present and Planned Land Uses in the 4-M Water District Area,
Including Agricultural and Open Space Lands . . . . . . . . . . . 25
5.2.2 SOI Determinations Present and Planned Land Use for
4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Present and Probable Need for Public Facilities and Services in the
4-M Water District Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.1 Service Need for 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.2 SOI Determinations for Facilities and Services
Probable Need for 4-M Water District . . . . . . . . . . . . . . . . . 26
5.4 Public Facilities Future Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.1 Facilities and Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.2 SOI Determinations for Public Facilities Present and Future
Capacity for 4-M Water District . . . . . . . . . . . . . . . . . . . . . . 26
5.5 Social or Economic Communities of Interest . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.1 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.2 SOI Determinations for Social or Economic Communities of
Interest for 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . 27
5.6 Disadvantaged Unincorporated Community Status . . . . . . . . . . . . . . . . . . . . 27
5.6.1 Disadvantaged Unincorporated Communities . . . . . . . . . . . . . . . . . . 27
5.6.2 Disadvantaged Unincorporated Community Status . . . . . . . . . . . . 27
ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
PREPARERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
APPENDIX A SOIL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
MAPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 1 US Bureau of Reclamation Map 4-M Water District . . . . . . . . . . . . . . . . . . 55
Figure 2 Location Map 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 3 Topographic Map 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 4 Soils Map 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 5 General Plan Map 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 6 Zoning Map 4-M Water District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
ii
1 INTRODUCTION
1.1 LAFCO's Responsibilities
This Municipal Service Review (MSR) has been prepared for the Colusa Local Agency
Formation Commission (Colusa LAFCO). Local Agency Formation Commissions are
quasi-legislative local agencies created in 1963 to assist the State in encouraging the
orderly development and formation of local agencies. This MSR consists of a review of
water service as provided by the 4-M Water District.
The Cortese-Knox-Hertzberg Local Government Reorganization Act of 2000
(Government Code §56000 et seq.) is the statutory authority for the preparation of an
MSR, and periodic updates of the Sphere of Influence of each local agency. The
Governor’s Office of Planning and Research has issued Guidelines for the preparation of
an MSR. This MSR adheres to the procedures set forth in the MSR Guidelines.
A Sphere of Influence is a plan for the probable physical boundaries and service area of
a local agency, as determined by the affected Local Agency Formation Commission
(Government Code §56076). Government Code §56425(f) requires that each Sphere of
Influence be updated not less than every five years, and §56430 provides that a
Municipal Service Review shall be conducted in advance of the Sphere of Influence
update.
1.2 Municipal Service Review Requirements
The statute as amended by AB1744 and regulations call for a review of the municipal
services provided in the county or other appropriate area designated by the LAFCO. The
LAFCO is required, as part of the MSR, to prepare a written statement of findings of its
determinations with respect to each of the following:
1. Growth and Population
2. Capacity and Infrastructure
3. Financial Ability
4. Shared Facilities
5. Government Structure and Accountability
6. Location and Characteristics of any Disadvantaged Unincorporated Communities
(DUC) within or Contiguous to the District’s SOI
4-M Water District MSR-SOI 1
Colusa LAFCO
1.3 LAFCO Policies and Procedures Related to Municipal Services
The Colusa LAFCO adopted policies and procedures related to municipal services on
February 5, 2004.
1.4 Description of Public Participation Process
Colusa LAFCO is a legislative body authorized by the California Legislature and
delegated powers as stated in the Cortese-Knox-Hertzberg Local Government
Reorganization Act of 2000 (the Act). The LAFCO proceedings are subject to the
provisions of California’s open meeting law, the Ralph M. Brown Act (Government Code
Sections 54950 et seq.) The Brown Act requires advance posting of meeting agendas
and contains various other provisions designed to ensure that the public has adequate
access to information regarding the proceedings of public boards and commissions.
Colusa LAFCO complies with the requirements of the Brown Act.
The MSR Guidelines provide that all LAFCOs should encourage and provide multiple
public participation opportunities in the municipal service review process. MSR policies
have been adopted by the Colusa LAFCO. Colusa LAFCO has discussed and
considered the MSR process in open session, and has adopted a schedule for
completing the various municipal service reviews and sphere of influence updates for
Colusa County. Each municipal service review will be prepared as a draft, and will be
subject to public and agency comment prior to final consideration by the Colusa LAFCO.
1.5 California Environmental Quality Act (CEQA)
The Municipal Service Review is a planning study that will be considered by Colusa
LAFCO in connection with subsequent proceedings regarding the 4-M Water District
Sphere of Influence. The Sphere of Influence review or update that would follow has not
been approved, or adopted by LAFCO.
This MSR is funded in the Colusa LAFCO’s 2014-2015 Budget. This MSR includes an
analysis, to the extent required by Section 15262 of the CEQA Guidelines, of the
environmental factors that may be affected by the Municipal Service Review process,
but will not include the preparation of an environmental review document.
4-M Water District MSR-SOI 2
Colusa LAFCO
2 SETTING
2.1 Colusa County
2.1.1 Colusa County Background
Colusa County is one of the original counties of California, created in 1850 at the time of
statehood. Parts of the county's territory were given to Tehama County in 1856 and to
Glenn County in 1891. According to the U.S. Census Bureau, the County has a total
area of 1,156 square miles including 6 square miles of water. A large number of streams
drain the county including Elk Creek and Salt Creek. The County's eastern boundary is
formed, in part, by the Sacramento River.
2.1.2 Colusa County Population
There are two incorporated cities in Colusa County: Colusa and Williams. There is one
census-designated place: Arbuckle. The Colusa County population is shown in the
following table. Since 2005, the rate of population increase has slowed.
Colusa County Population1
Year 1980 1990 2000 2005 2006 2010 2014
Population 12,738 16,275 18,804 21,095 21,272 21,419 21,419
2.1.3 Colusa County Employment
The State of California Employment Development Department reports that in September
2015 the Colusa County Labor Force with 11,050 with 10,030 employed and 1,020
unemployed (9.2%).2 Farm employment was 2,680 or 28% of the 9,750 employed
workers in the County.3 (Labor Force data includes self-employed individuals but
Industry employment excludes self-employed individuals.)
2.1.4 Colusa County Agriculture
The “2014 Colusa County Crop Report” stated the following:4
Agriculture continues to be Colusa County’s major producing industry.
The 2014 gross production for agriculture was $876,347,000. This
represents a decrease of $43,763,930 or approximately 4.8% when
compared to the 2013 value of $920,110,930. The decrease in gross
production is mainly due to the reduction in surface water allocation to
Colusa County Farmers. This lack of available water has resulted in
approximately 45,000 acres of annual crops being taken out of production
in 2014. The price for tomatoes, almonds, and cattle and calves
1 US Census Bureau, http://quickfacts.census.gov/qfd/states/06/06011.html, October 26, 2015.
2 State of California, Employment Development Department, Labor Market Information Division, Phone: 916-262-162,
http.//www.labormarketinfo.edd.ca.gov, October 16, 2015.
3 State of California, Employment Development Department, Labor Market Information Division, Phone: 916-262-162,
http.//www.labormarketinfo.edd.ca.gov, October 16, 2015.
4 Colusa County Department of Agriculture, 2014 Colusa County Crop Report, Joseph J. Damiano, Agricultural
Commissioner, 100 Sunrise Blvd, Suite F, Colusa CA 95932.
4-M Water District MSR-SOI 3
Colusa LAFCO
increased slightly, while the price for rice and walnuts remained relatively
flat when compared to 2013.
Almonds, with a gross value of $279,147,000 have taken the place of
rice, valued at $221,470,000, as the number one crop in terms of gross
value in Colusa County. Walnuts and processing tomatoes are the
number three and four crops in terms of gross value, and cattle and
calves is now number five.
The Crop Report also showed that 57 different crops (including seeds) were exported to
73 countries around the world from Colusa County.
2.2 Central Valley Project and Tehama-Colusa Canal
The Sacramento Canals Unit of the Central Valley Project, which includes the Tehama-
Colusa and Corning Canals, was designed to provide irrigation water in the Sacramento
Valley, principally in Tehama, Glenn, Colusa and Yolo Counties. Authorized in 1950, the
unit consists of Red Bluff Diversion Dam, Funks Dam, Corning Pumping Plant, Tehama-
Colusa Canal (TCC), and Corning Canal. Full and supplemental irrigation service is
provided to about 150,000 acres.5
The Tehama-Colusa Canal Authority (TCCA) is a Joint Powers Authority comprised of
17 Central Valley Project water contractors. The service area spans four counties
(Tehama, Glenn, Colusa, and Yolo) along the west side of the Sacramento Valley,
providing irrigation water to farmers growing a variety of permanent and annual crops.
TCCA operates and maintains the 140 mile Tehama-Colusa and Corning canals
irrigation water supply system. The service area is approximately 150,000 acres,
producing over $250 million in crops per year, and contributing $1 billion to the regional
economy annually.6
Water for the 4-M Water District is available from the Central Valley Project according to
the total water supply available. The water is diverted from the Sacramento River into
the TCC and thence conveyed to the District. The system was designed to divert water
from the Sacramento River into the TCC by virtue of the Red Bluff Diversion Dam across
the Sacramento River located in Red Bluff, California. Although the system operated in
this manner for some years, environmental concerns and new regulatory requirements
have altered the operational practices of the Dam.
The Red Bluff Diversion Dam was originally operated to divert water (essentially) year
round by lowering the gates thereby ultimately causing the release of water into the TC
canal. In 1986 the gates were lowered for only six months for irrigation and later for only
two months a year. These curtailments were a result of the endangered species listing
of the Chinook salmon and litigation. In 2011 the gates were raised permanently. Water
is currently diverted via a newly constructed water pump system.
5 http://www.usbr.gov/dataweb/html/sacramento.html#general
6 Tehama-Colusa Canal Authority, http://tccanal.com/about.php, September 22, 2014
4-M Water District MSR-SOI 4
Colusa LAFCO
The District’s CVP water supply is available under two water service contracts with the
Bureau of Reclamation. The District contracts with the Bureau to purchase up to 5700
acre feet of water per year from the CVP. If there is not sufficient CVP water available
(due to lack of precipitation or regulatory restrictions), the District's supply can be
reduced by up to 100%.
2.3 Colusa County Water Rights from the T-C Canal
At one time Colusa County held rights to about 5% of the total T-C Canal water supplies,
but this is no longer the case. Colusa County had a master contract for 60,000 acre-feet,
which was subcontracted to 8 water agencies as follows:
Colusa County WD Glenn Valley WD
Holthouse WD Myers-Marsh Mutual Water Company
Cortina WD LaGrande WD
4-M WD Westside Water District
In 2004, Colusa County approved an assignment to Westside WD of Westside's 40,000
acre-feet. In 2007, the last of the assignments to the other 7 agencies of their respective
subcontracts was finalized. Colusa County retained 1 acre-foot, in order to hold onto its
master contract. The assignments of these 7 agreements allow Colusa County to require
an assignment back of up to 5% of each contractor's supply. This option expires 10
years after the assignments. If Colusa County were to exercise its option as to each
subcontractor, the County could recover a total of 1000 acre-feet. The rest is
permanently assigned to the respective subcontractors. If the ten years expires without
exercise of the option, that will be true of the balance too.
The contractors are each separately responsible for their respective contract supplies --
ordering, paying USBR charges, paying TCCA charges, use, Reclamation Reform Act of
1982 (RRA) compliance, etc.7
2.4 Colusa County Water
The “Colusa County Groundwater Management Plan” explains the importance of surface
water in Colusa County as follows:
The surface water supplies available for use in Colusa County are
significant. Surface water is used on 74 to 86 percent of the irrigated or
developed land within the Sacramento Valley portion of the County.
Groundwater is used on 10 to 22 percent of that land. Of the land where
groundwater is used, 6 to 11 percent is not within the service area of an
organized entity. Clearly, the surface water supplies are critical to the
socio-economic and environmental well-being of Colusa County.8
The “Colusa County Groundwater Management Plan” shows the 4-M Water District
getting 57 percent of the irrigation water from surface water and 43 percent of the
irrigation water from groundwater in 2003.9
7 T-C Canal Authority, J. Mark Atlas, Legal Counsel, Phone; 530-934-5416, E-Mail: matlas@jmatlaslaw.com, 332 W.
Sycamore Street, Willows CA 95988
8 Colusa County, “Colusa County Groundwater Management Plan”, September 2008, by Wood Rodgers Inc. P. iv.
9 Colusa County, “Colusa County Groundwater Management Plan”, September 2008, by Wood Rodgers Inc., Table II.5
4-M Water District MSR-SOI 5
Colusa LAFCO
3 4-M WATER DISTRICT
3.1 4-M Water District Description
3.1.1 4-M Water District History10
The 4-M Water District was formed on May 13, 1975 under Section 34150 of the
California Water Code and related sections for the singular purpose of contracting with
the US Bureau of Reclamation for the delivery of irrigation water to the irrigable lands
within the District from the Central Valley Project through the Tehama-Colusa canal.
On June 20, 1978, the District entered into a subcontract with the County of Colusa for
5,700 acre feet of the County’s 60,000 acre foot contract with the Bureau of
Reclamation. The form of the subcontract and the amount specified were presented to
the District by the Bureau of Reclamation by letter dated June 14, 1978 which
determined that the District had 1,380 irrigable acres.
The District formed Improvement Districts No. 1 and No. 2 to construct an irrigation
distribution system. The Improvement District No. 1 has been in operation since 1979
and consists of 950 irrigable acres which is historically planted in alfalfa, beans, wheat,
corn and tomatoes. Improvement District No. 2 consists of 430 irrigable acres which is
currently not being irrigated. During the 2005-2006 fiscal year, the District was
approached by a landowner to have water delivered to specified acres in the
Improvement District No. 2. The Board of Directors decided that any expenses related to
the delivery of water to the acres requested to be irrigation be the responsibility of the
landowner making the request.
3.1.2 4-M Water District Acreage
The 4-M Water District is located southeast of Williams, California in Colusa County. The
US Bureau of Reclamation reports the following acreages in this District:
Gross Acres 9,152
Arable Acres 1,738
Irrigable acres 1,651
Productive acres 1,56911
Even though the District is fairly large the amount of land irrigated with water from the
Tehama-Colusa Canal is much smaller.
10 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, June 29, 2015.
11 USBR, Jacob Berens, jberens@usbr.gov, November 2, 2015.
4-M Water District MSR-SOI 6
Colusa LAFCO
3.1.3 4-M Water District Board of Directors
The 4-M Water District Board of Directors is listed below:12
Glenn E. Mathis, Jr. (President) Elected 2005 Term expires 2017
P. O. Box 338
Maxwell, CA 95955
Marion C. Mathis (Secretary) Elected 2007 Term expires 2019
P. O. Box 338
Maxwell, CA 95955
Glenn E. Mathis, III (D.J.) Elected 2007 Term expires 2019
P. O. Box 37
Maxwell, CA 95955
Wade M. Mathis Elected 2005 Term expires 2017
P. O. Box 662
Maxwell, CA 95955
Jared K. Mathis Elected 2007 Term expires 2019
1123 B Stuart Street
Arlington, VA 22201
Board meetings are held at 3707 Mills Orchard Road, Maxwell, CA 95955. The 4-M
Water District Annual Meeting is held in March. Special meetings are held as noticed.13
The District retains Andrew Hitchings as Attorney.
3.1.4 4-M Water District Contact Information
The contact information for the 4-M Water District is as follows:
4-M Water District
PO Box 338, Maxwell CA 95955-0338
Phone: 530-438-2849
Fax: 530-438-2596
E-Mail: gmmathis@frontiernet.net
3.1.5 4-M Water District Population
The population of the 4-M Water District is ten people and there are five registered
voters. 14
12 4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
13 4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
14 4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
4-M Water District MSR-SOI 7
Colusa LAFCO
3.2 4-M Water District Crops
The Tehama-Colusa Canal Authority reports the following crops for the 4-M Water
District in 200815 and in 2011.16
4-M WATER DISTRICT CROPS
CROP 2008 2011
Corn 101 65
Wheat 90 103
Alfalfa 288 175
Tomatoes 70 -
Vegetables 4 -
Melons 6 -
Various Seeds 30
Almonds 441 481
Sunflower - 50
Beans - 25
Other field crops - 48
Vine seeds other 120
Fallow/Idle 450
Not harvested 197 37
Total 1,127 1,554
Almonds continue from year to year because they are an orchard crop but other crops
can be changed to meet changing conditions and markets.
15 Tehama-Colusa Canal Authority, Jeff Sutton, General Manager, PO Box 1025, Willows CA 95988, Phone 530-934-
2125, Fax 530-934-2355, Fax August 15, 2008.
16
Tehama-Colusa Canal Authority, Kayla Cushman, E-Mail: kchusman@tccanal.com, November 9, 2015.
4-M Water District MSR-SOI 8
Colusa LAFCO
3.3 4-M Water District Soils
The following soils are found in the 4-M Water District. The soils are described in more
detail in Appendix A at the end of this report.
SOILS IN THE 4-M WATER DISTRICT, Colusa County, California
Map
Map Unit Name Acres Percent
Unit
102 Capay clay loam, 0 to 1 percent slopes 413.4 4.50%
112 Westfan loam, 0 to 2 percent slopes 54.0 0.60%
127 Mallard clay loam, 0 to 1 percent slopes 288.2 3.10%
144 Hillgate clay loam, 0 to 2 percent slopes 0.4 0.00%
145 Hillgate loam, 0 to 2 percent slopes 393.8 4.30%
147 Hillgate loam, 1 to 5 percent slopes 32.9 0.40%
155 Alcapay clay, 0 to 1 percent slopes 0.4 0.00%
200 Clear Lake clay, drained, 0 to 8 percent slopes 13.1 0.10%
204 Capay clay, 0 to 3 percent slopes, occasionally flooded 169.4 1.80%
205 Capay clay, 0 to 3 percent slopes 65.0 0.70%
206 Capay clay, 5 to 9 percent slopes 141.1 1.50%
210 Corval loam, 0 to 3 percent slopes 125.1 1.40%
213 Ayar clay, 15 to 30 percent slopes 5.6 0.10%
215 Altamont-Sehorn complex, 15 to 30 percent slopes 793.3 8.60%
218 Sehorn-Altamont complex, 30 to 50 percent slopes 120.4 1.30%
220 Altamont silty clay, 5 to 9 percent slopes 154.4 1.70%
230 Corning clay loam, 1 to 5 percent slopes 200.1 2.20%
253 Millsholm-Altamont-Rock outcrop complex, 5 to 15 percent slopes 230.4 2.50%
255 Millsholm-Rock outcrop complex, 9 to 30 percent slopes 578.5 6.30%
257 Millsholm-Capay complex, 3 to 9 percent slopes 242.4 2.60%
332 Millsholm-Rock outcrop association, 30 to 75 percent slopes 758.7 8.20%
334 Millsholm-Contra Costa association, 30 to 75 percent slopes 4,388.3 47.70%
652 Water 33.4 0.40%
TOTAL 9,202.3 100.00%
3.4 4-M Water District General Plan and Zoning Designations
The Colusa County General Plan and Zoning designations for the 4-M Water District
area are shown on maps at the end of this report. The General Plan Designations are
General Agriculture and Upland Agriculture which are defined in the Colusa County
General Plan as follows:
Agriculture General
The Agriculture General (AG) designation identifies areas to be retained
for agriculture and/or uses that are complementary to existing or nearby
agricultural uses. This designation includes lands under agricultural
preservation and/or conservation contracts and easements; land having
present or future potential for agricultural production, and contiguous or
intermixed smaller parcels on which non-compatible uses could
4-M Water District MSR-SOI 9
Colusa LAFCO
jeopardize the long-term agricultural use of nearby agricultural lands.
Lands designated Agriculture General are planned to be preserved for
agricultural uses and the intent of the designation is to preserve such
lands for existing and future agricultural use and protect these lands from
the pressures of development.17
Agriculture Upland
The Agriculture Upland (AU) designation is used to identify agricultural
areas suitable for cattle and sheep grazing, areas with undeveloped,
uninhabited forests, chaparral and grasslands, and intermixed areas
suitable for crop production. Soils range from very good soils to those that
are less suitable for crop production, but are suitable for livestock and
other agricultural activities. Land divisions for non-agricultural purposed
are discouraged in these areas to prevent conflicts with ranching and to
minimize exposure to natural hazards.18
4-M WATER DISTRICT COLUSA COUNTY GENERAL PLAN DESIGNATIONS
General Plan Designation Acres
AG Agriculture General 1,523.86
AU Agriculture Upland 7,569.67
No Designation 92.77
Total Acres 9,186.31
4-M WATER DISTRICT COLUSA COUNTY ZONING DESIGNATIONS
Zoning Designation Acres
E-A Exclusive Agriculture (40 acre minimum parcel size) 1,327.93
A-P Agriculture Preserve (80 acre minimum parcel size) 7,765.61
No Designation 92.77
Total Acres 9,186.31
3.5 Service Provision
Although the 4-M Water District is allocated 5700 acre-feet of water according to the
Tehama-Colusa Canal Authority, the District does not always receive the full allocation.
The T-C Canal Authority charges $8.42 per acre-foot for Canal maintenance.19
According to the US Bureau of Reclamation the 4-M Water District used 3,095 acre-feet
of water at $16.70 per acre-foot in 2007. The District was also able to transfer in another
500 acre-feet of water.20 The District received no water in 2015.21
The 4-M Water District receives the water from the Tehama-Colusa and has an
underground system with a return pond.22
17 Colusa County General Plan, Adopted July 31, 2012 Page 8-3.
18 Colusa County General Plan, Adopted July 31, 2012 Pages 8-3 and 8-4.
19 Tehama-Colusa Canal Authority, Jeff Sutton, General Manager, PO Box 1025, Willows CA 95988, Phone 530-934-
2125, Fax 530-934-2355, Phone: August 14, 2008
20USBR, Jacob Berens, jberens@mp.usbr.gov, August 14, 2008
21
Tehama-Colusa Canal Authority, Kayla Cushman, E-Mail: kchusman@tccanal.com, November 9, 2015.
22 4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
4-M Water District MSR-SOI 10
Colusa LAFCO
3.6 Finances
3.6.1 Budget
The 4-M Water District supplied the following financial information to the State
Controller’s Office for the fiscal year ended on June 30, 2015.
Operating Revenues
Water Sales Irrigation 373,940
Water Service Standby or Availability Charge 3,675
Total Operating Revenues $377,615
Operating Expenses
Water Purchases 336,728
Other 20,566
Pumping 628
Administration and General 1,013
Transmission and Distribution 20,392
Total Operating Expenses $379,327
Operating Income (Loss) (1,712)
Non-Operating Revenues
Interest Income 36
Property Assessments 26,252
Total Non-Operating Revenues $26,288
Non-Operating Expenses
Interest on Long-Term Debt 7,645
Total Non-Operating Expenses $7,645
Non-Operating Income (Loss) $18,643
Income (Loss) Before Operating Transfers $16,931
Fund Equity, Beginning of Period $755,813
Fund Equity, End of Period $722,744
General Obligation Bonds, Revenue Bonds, Certificates of Participation and Other
Year of Authorization 1978
Principal Amount Authorized and Issues $698,647
Beginning Maturity Date 1980
Ending Maturity Date 2016
Principal Amount Matured During Fiscal Year $48,902
Principal Amount Unmatured, End of Fiscal Year $26,673
Assets
Cash and Cash Equivalents $88,512
Buildings and Improvements $710,905
Liabilities
Long-term Indebtedness $26,673
The District has a good financial position and files the necessary forms with the State
Controller’s Office.
4-M Water District MSR-SOI 11
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3.6.2 Audit
The Colusa County Auditor-Controller shows the following information for the 4-M Water
District Annual Audit for Fiscal Year ended June 30, 2014 and on the Fiscal Year ended
June 30, 2015.
4-M WATER DISTRICT BALANCE SHEET
JUNE JUNE 30, 201524
30,
201423
ASSETS
Cash on deposit in Bank of America 9,128 13,585
Checking Account
Cash on deposit in Bank of America 110,712 74,281
Money Market Account
Cash on deposit in State Treasury 643 645
LAIF Account
Total Cash on deposit 120,483 88,511
Equipment 0 0
Improvements-Improvement District No. 1 Irrigation 710,905 710,905
Distribution System
Land 0 0
Total Assets $831,388 $799,416
LIABILITIES
2014 Loan Payable- $28,274
Principal $23,739 + Interest $4,535
Short Term Loan Payable 06/30/14 $23,739
Long Term 30 year Loan 06/30/14 $28,097
Total Liabilities $75,575 $26,673
EQUITY
Fund Balance Unavailable 07/01/13 0
Add/(Deduct) thru 06/30/14
Fund Balance Available 07/01/13 66,770
Add/(Deduct) thru 6/30/14 53,713
Fund Balance Available 06/30/14 120,483 6/30/15 88,511
Reserve for Loans 07/01/13 (75,575)
Add/(Deduct) thru 06/30/14 0
Reserve for Bonds/Loans 06/30/14 (75,575) 6/30/15 (26,673)
Fixed Assets Investment 07/01/13 710,905
Add/(Deduct) thru 06/30/14 0
Fixed Assets Investment 06/30/14 $710,905 6/30/15 $710,905
Total Equity $755,813 $772,743
Total Liabilities and Equity $831,388 $799,416
23 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, June 29, 2015.
24
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2015, December 10, 2015.
4-M Water District MSR-SOI 12
Colusa LAFCO
The above table shows the difference between the cash on deposit and the value of the
investment in the irrigation infrastructure.
4-M WATER DISTRICT CHANGES IN EQUITY AS OF JUNE 30, 201425
Invest Fixed Reserve for Fund Fund TOTAL
Assets Loan Balance Balance
Unavailable Available
Equity 710,905 (75,575) 0 66,770 702,100
Balance
07/01/13
Add/(Deduct) 0 0 0 53,713 53,713
Equity $710,905 ($75,575) $0 $120,483 $755,813
Balance
06/30/14
4-M WATER DISTRICT CHANGES IN EQUITY AS OF JUNE 30, 201526
Invest Fixed Reserve for Fund Fund TOTAL
Assets Loan Balance Balance
Unavailable Available
Equity 710,905 (75,575) 0 120,483 755,813
Balance
Add/(Deduct) 0 48,902 0 (31,972) 16,930
Equity $710,905 (26,673) $0 $88,511 $722,743
Balance
06/30/15
The above tables show that the 4-M Water District is paying off the loan for the
infrastructure over time.
The following table shows the cash flow for the two years audited of 2014 and 2015.
25 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley, Special District Auditor, June 29, 2015.
26
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2015, December 10, 2015.
4-M Water District MSR-SOI 13
Colusa LAFCO
4-M WATER DISTRICT STATEMENT OF CASH RECEIPTS, CASH
DISBURSEMENTS AND CASH BALANCES
JUNE 30, 201427 JUNE 30, 201528
Cash on deposit at July 1, $66,770 July 1, $120,483
Bank of America 2013 2014
REVENUE
Assessment Income 29,558 26,252
Operations and Maintenance Fee 3,675
Sale of Water 254,080 373,940
Interest 16 36
Total Receipts 283,654 403,903
DISBURSEMENTS
Bank Fees 36 36
Legal and Accounting 724 842
License and Fees 67 136
Loan Debt Principal 2015 25,163
Loan Debt Interest 2015 3,110
Loan Debt Principal 2014 23,739
Loan Debt Interest 2014 4,535
Office Expense 0 0
Repairs 0 0
Utilities 5,638 628
Water Restoration Fees 15,666 15,976
Water Conveyance-Tehama-Colusa 23,937 20,392
Canal Authority
Water Purchase-Bureau of 183,873 336,728
Reclamation
Water right fee –State Board of 4,590
Equalization
Total Disbursements 229,941 435,875
Excess of Receipts over Disbursements $53,713 ($31,972)
Cash on deposit, June 30, 2014 $120,483 $88,511
The above table shows that even though a substantial amount of funds are received,
most of the funds are paid out to the Tehama-Colusa Canal Authority and the US
Bureau of Reclamation.
27 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley, Special District Auditor, June 29, 2015, Page 5.
28
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2015, December 10, 2015.
4-M Water District MSR-SOI 14
Colusa LAFCO
The Colusa County Special District Auditor, Janet Dawley, describes the finances of the
4-M Water District as follows:
4-M Water District Year-End Balance
Account June 30, 201429 June 30, 201530
Bank of America Money Market Account $110,712 $74,281
Bank of America Checking Account $9,128 $13,585
LAIF Account with State Treasury $642 $645
Revenue consisted of an assessment levied to the landowners within the
boundary of the District based on irrigable acres to cover the expenses of
the Improvement District No. 1 which is collected by the Colusa County
Tax Collector. Revenue also included the sale of irrigation water and
interest earned. All revenue was deposited into the District’s accounts at
Bank of America and was reconciled to the Bank’s monthly statements.
Expenditures were paid by check upon demand, were recorded in the
District’s accounting system and were reconciled to the Bank’s monthly
statements.
In 1980, the District procured a 30 year loan to provide the financing for
the development and construction of an underground water delivery
system in the Improvement District No. 1 and No. 2. The final loan
payment will be paid in 2015. The annual payment for the 2013-14 fiscal
year in the amount of $28,273 was paid on 7/15/14. As of June 30, 2014,
the unmatured balance was $75,575.31 As of June 30, 2015, the
unmatured balance was $26,673. 32
From the time the District obtained its water service contract, it has been
the District’s intention to have water delivered to the remaining irrigable
acres within the Improvement District No. 2 although they have never
been irrigated. During the 2005-2006 fiscal year, the District has been
approached about water being delivered to specified acres in the
Improvement District No. 2. The Board of Directors decided that any
expenses related to the delivery of water to the acres requested to be
irrigated be the responsibility of the landowner.
The District has no insurance. 33
29 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley, Special District Auditor, June 29, 2015, Page 3.
30
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2015, December 10, 2015.
31 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley, Special District Auditor, June 29, 2015, Page 3.
32
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2015, December 10, 2015.
33 Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water District, Annual Audit for
Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley, Special District Auditor, June 29, 2015, Page 2.
4-M Water District MSR-SOI 15
Colusa LAFCO
4 MUNICIPAL SERVICE REVIEW
The Municipal Service Review determinations are required by the State Law. They serve
the purpose of helping Colusa LAFCO to understand the special district or city involved
in an annexation, detachment or reorganization proposal.
The determinations are not binding proposals for the special district or city. The
determinations are subject to change because the jurisdiction involved is constantly
changing, improving or growing. The State requires the MSR to be reviewed every five
years as part of the SOI update process.
4.1 Growth and Population Projections for the 4-M Water District Area34
Purpose:
To evaluate service needs based on existing and anticipated growth patterns and
population projections.
4.1.1 Population Growth
35
The population within the 4-M Water District is ten. The area in the 4-M Water District
is zoned for agriculture and designated for agricultural use on the Colusa County
General Plan. The District does not want to encourage population growth within the
District Boundary because this would cause conflicts with the agricultural uses.
4.1.2 MSR Determinations on Growth and Population for 4-M Water District
1-1) It is expected that the population within the 4-M Water District will remain at ten.
1-2) The population projections for Colusa County and for Williams are found in the
Colusa County and City of Williams general plans. Population growth within the
District boundaries will be minimal since the 4-M Water District is not in the urban
water business.
1-3) The District should maintain an active relationship with Colusa County and City
of Williams planning departments to make sure that the District goals are
considered when land use changes and land use regulations are made.
34 California Government Code Section 56430. (a) (1)
35 4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
4-M Water District MSR-SOI 16
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4.2 Location and Characteristics of any Disadvantaged Unincorporated
Communities (DUC) within or Contiguous to 4-M Water District 36
Purpose:
To comply with the State Law to examine any unincorporated areas which could
be provided with better services by annexing to an adjacent city.
4.2.1 Determination of 4-M Water District Area Disadvantaged Unincorporated
Community Status
The 4-M Water District does not include any Disadvantaged Unincorporated
Communities.
4.2.2 MSR Determinations on Disadvantaged Unincorporated Communities near
4-M Water District
2-1) The 4-M Water District does not include any Disadvantaged Unincorporated
Communities.
4.3 Capacity and Infrastructure
Purpose: To evaluate the present and planned capacity of public facilities,
adequacy of public services, and infrastructure needs or deficiencies including
needs or deficiencies related to sewers, municipal and industrial water, and
structural fire protection in any disadvantaged, unincorporated communities
within or contiguous to the sphere of influence.37
4.3.1 Infrastructure Background 4-M Water District
The 4-M Water District pays for maintenance of the Tehama-Colusa Canal and
participates in the Tehama-Colusa Canal Authority. The infrastructure within the District
is the minimum needed to deliver the water from the T-C Canal to the fields. The District
strives to maintain service levels within the changing dynamics of population growth in
the surrounding area, escalating costs, limited funding and increasing water demands for
Northern California water.
4.3.2 MSR Determinations Regarding Capacity and Infrastructure for 4-M
Water District
3-1) The infrastructure of the 4-M Water District is adequate to accomplish the task of
the District which is to provide US Bureau of Reclamation water to the growers
when it is available.
36 California Government Code Section 56430. (a) (2)
37 California Government Code Section 56430. (a)(3).
4-M Water District MSR-SOI 17
Colusa LAFCO
4.4 Financial Ability to Provide Services38
Purpose:
To evaluate factors that affect the financing of needed improvements and to
identify practices or opportunities that may help eliminate unnecessary costs
without decreasing service levels.
4.4.1 Financial Considerations
The 4-M Water District is self-taxing and collects the funds as required by the US Bureau
of Reclamation and the Tehama-Colusa Canal Authority.
4.4.2 MSR Determinations on Financial Ability for 4-M Water District
4-1) The 4-M Water District controls costs to the extent possible.
4-2) The 4-M Water District must pay the water rates set by the USBR and the TCCA.
4-3) The 4-M Water District has sound financial management.
4-4) The financial position of the District is better when the District can supply the
maximum amount of water allowed by the water-rights agreement with the US
Bureau of Reclamation.
4-5) The District contributes to the local economy through salaries and equipment
purchases.
4-6) The District’s budget is designed to cut costs where possible.
4-7) The District cooperates with other water districts to build and maintain water
supply.
4-8) The 4-M Water District rates must allow the growers to irrigate and grow the
crops at a reasonable cost or they will not be able to stay in business and
purchase water in the future.
38 California Government Code Section 56430. (a)(4)
4-M Water District MSR-SOI 18
Colusa LAFCO
4.5 Opportunities for Shared Facilities
39
Purpose:
To evaluate the opportunities for a jurisdiction to share facilities and resources to
develop more efficient service delivery systems.
4.5.1 Facilities
The 4-M Water District shares the facilities and the costs of Shasta Dam, the Red Bluff
Diversion Dam and the Tehama-Colusa Canal. There are many reasons that it would not
be feasible for the District to be combined with other similar districts in Colusa County.
Even though there are other districts which obtain water from the Tehama-Colusa Canal;
these districts may have different enabling acts, different contracts with the Bureau of
Reclamation, and different means of financing their water conveyance infrastructure.40
The cost of combining the Districts would far exceed any benefit derived.
4.5.2 MSR Determinations on Shared Facilities for 4-M Water District
5-1) The District works with other districts and agencies whenever it is legally and
physically possible.
5-2) The District receives water flowing through Shasta Dam and diverted from the
Sacramento River so the water use must be coordinated by the US Bureau of
Reclamation.
5-3) The District uses the services of the Special Districts Auditor in the Colusa
County Auditor’s Office to prepare the annual audit.
39 California Government Code Section 56430. (a)(5)
40 Tehama-Colusa Canal Authority, J. Mark Atlas, Attorney, 332 West Sycamore Street, Willows, CA 95988, 530-934-
5416, jma@jmatlaslaw.com, E-Mail: January 9, 2009.
4-M Water District MSR-SOI 19
Colusa LAFCO
4.6 Accountability for Community Service Needs, Governmental Structure and
Operational Efficiencies41
Purpose:
To consider the advantages and disadvantages of various government structures
that could provide public services, to evaluate the management capabilities of the
organization and to evaluate the accessibility and levels of public participation
associated with the agency’s decision-making and management processes.
4.6.1 Government Structure
The 4-M Water District has a five-member Board of Directors. A Water District is a
landowner voter District. The District was open to providing the information requested by
Colusa LAFCO.
4.6.2 MSR Determinations on Government Structure and Accountability for 4-M
Water District
6-1) The Water District is the most suitable form of organization for the 4-M Water
District.
6-2) The Board meets as needed.
6-3) The District has an elected Board.
6-4) The District Boundary should remain the same.
6-5) The District has a limited ability to expand or to combine with another District
because of US Bureau of Reclamation rules and regulations regarding water
supply.
41 California Government Code Section 56430. (a)(6).
4-M Water District MSR-SOI 20
Colusa LAFCO
5 SPHERE OF INFLUENCE FOR 4-M WATER DISTRICT
5.1 SOI Requirements
5.1.1 LAFCO's Responsibilities
This Sphere of Influence (SOI) has been prepared for the Colusa Local Agency
Formation Commission (Colusa LAFCO). Local Agency Formation Commissions are
quasi-legislative local agencies created in 1963 to assist the State in encouraging the
orderly development and formation of local agencies. This SOI consists of a review of
water service as provided by the 4-M Water District and the District Boundary.
The Cortese-Knox-Hertzberg Local Government Reorganization Act of 2000
(Government Code §56000 et seq.) is the statutory authority for the preparation of an
MSR, and periodic updates of the Sphere of Influence of each local agency. The
Governor’s Office of Planning and Research has issued Guidelines for the preparation of
an MSR. This MSR adheres to the procedures set forth in the MSR Guidelines.
A Sphere of Influence is a plan for the probable physical boundaries and service area of
a local agency, as determined by the affected Local Agency Formation Commission
(Government Code §56076). Government Code §56425(f) requires that each Sphere of
Influence be updated not less than every five years, and §56430 provides that a
Municipal Service Review shall be conducted in advance of the Sphere of Influence
update.
5.1.2 Sphere of Influence Requirements
In determining the Sphere of Influence for each local agency, LAFCO must consider and
prepare a written statement of determinations with respect to each of the following:
1. The present and planned land uses in the area, including agricultural and open
space lands;
2. The present and probable need for public facilities and services in the area;
3. The present capacity of public facilities and adequacy of public services which
the agency provides, or is authorized to provide; and
4. The existence of any social or economic communities of interest in the area if the
commission determines that they are relevant to the agency.
5. For an update of an SOI of a city or special district that provides public facilities
or services related to sewers, municipal and industrial water, or structural fire
protection, the present and probable need for those public facilities and services
of any disadvantaged unincorporated communities within the existing sphere of
influence.
4-M Water District MSR-SOI 21
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5.1.3 LAFCO Policies and Procedures Related to Spheres of Influence
The Colusa LAFCO adopted policies and procedures related to Spheres of Influence on
February 5, 2004.
5.1.4 Description of Public Participation Process
Colusa LAFCO is a legislative body authorized by the California Legislature and
delegated powers as stated in the Cortese-Knox-Hertzberg Local Government
Reorganization Act of 2000 (the Act). The LAFCO proceedings are subject to the
provisions of California’s open meeting law, the Ralph M. Brown Act (Government Code
Sections 54950 et seq.) The Brown Act requires advance posting of meeting agendas
and contains various other provisions designed to ensure that the public has adequate
access to information regarding the proceedings of public boards and commissions.
Colusa LAFCO complies with the requirements of the Brown Act.
SOI policies have been adopted by the Colusa LAFCO. Colusa LAFCO has discussed
and considered the SOI process in open session, and has adopted a schedule for
completing the various municipal service reviews and sphere of influence updates for
Colusa County. Each Sphere of Influence will be prepared as a draft, and will be subject
to public and agency comment prior to final consideration by the Colusa LAFCO.
5.1.5 Possible Approaches to the Sphere of Influence
LAFCO may recommend government reorganizations to particular agencies in the
county, using the SOIs as the basis for those recommendations. Based on review of the
guidelines of Colusa LAFCO as well as other LAFCOs in the State, various conceptual
approaches have been identified from which to choose in designating an SOI. These
seven approaches are explained below:
1) Coterminous Sphere:
The Sphere of Influence for a city or special district that is the same as its
existing boundaries. (This is the recommendation for the 4-M Water District.)
2) Annexable Sphere:
A sphere larger than the agency’s boundaries identifies areas the agency is
expected to annex. The annexable area is outside its boundaries and inside the
sphere.
3) Detachable Sphere:
A sphere that is smaller than the agency’s boundaries identifies areas the
agency is expected to detach. The detachable area is the area within the agency
bounds but not within its sphere.
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4) Zero Sphere:
A zero sphere indicates the affected agency’s public service functions should be
reassigned to another agency and the agency should be dissolved or combined
with one or more other agencies.
5) Consolidated Sphere:
A consolidated sphere includes two or more local agencies and indicates the
agencies should be consolidated into one agency.
6) Limited Service Sphere:
A limited service sphere is the territory included within the SOI of a multi-service
provider agency that is also within the boundary of a limited purpose district
which provides the same service (e.g., fire protection), but not all needed
services. Territory designated as a limited service SOI may be considered for
annexation to the limited purpose agency without detachment from the multi-
service provider.
This type of SOI is generally adopted when the following conditions exist:
a) the limited service provider is providing adequate, cost effective
and efficient services,
b) the multi-service agency is the most logical provider of the other
services,
c) there is no feasible or logical SOI alternative, and
d) inclusion of the territory is in the best interests of local government
organization and structure in the area.
Government Code §56001 specifically recognizes that in rural areas it may be
appropriate to establish limited purpose agencies to serve an area rather than a
single service provider, if multiple limited purpose agencies are better able to
provide efficient services to an area rather than one service district.
Moreover, Government Code Section §56425(i), governing sphere
determinations, also authorizes a sphere for less than all of the services provided
by a district by requiring a district affected by a sphere action to “establish the
nature, location, and extent of any functions of classes of services provided by
existing districts” recognizing that more than one district may serve an area and
that a given district may provide less than its full range of services in an area.
7) Sphere Planning Area:
LAFCO may choose to designate a sphere planning area to signal that it
anticipates expanding an agency’s SOI in the future to include territory not yet
within its official SOI.
4-M Water District MSR-SOI 23
Colusa LAFCO
5.1.6 SOI Update Process
LAFCO is required to establish SOIs for all local agencies and enact policies to promote
the logical and orderly development of areas within the SOIs. Furthermore, LAFCO
must update those SOIs every five years. In updating the SOI, LAFCO is required to
conduct a municipal service review (MSR) and adopt related determinations.
This report identifies preliminary SOI policy alternatives and recommends the SOI option
for the 4-M Water District. Development of actual SOI updates will involve additional
steps, including opportunity for public input at a LAFCO public hearing, and
consideration and changes made by Commissioners.
LAFCO must notify affected agencies 21 days before holding a public hearing to
consider the SOI and may not update the SOI until after that hearing. The LAFCO
Executive Officer must issue a report including recommendations on the SOI
amendments and updates under consideration at least five days before the public
hearing.
5.1.7 SOI Amendments and CEQA
LAFCO has the discretion to limit SOI updates to those that it may process without
unnecessarily delaying the SOI update process or without requiring its funding agencies
to bear the costs of environmental studies associated with SOI expansions. Any local
agency or individual may file a request for an SOI amendment. The request must state
the nature of and reasons for the proposed amendment, and provide a map depicting
the proposal.
LAFCO may require the requester to pay a fee to cover LAFCO costs, including the
costs of appropriate environmental review under CEQA. LAFCO may elect to serve as
lead agency for such a review, may designate the proposing agency as lead agency, or
both the local agency and LAFCO may serve as co-lead agencies for purposes of an
SOI amendment. Local agencies are encouraged to consult with LAFCO staff early in
the process regarding the most appropriate approach for the particular SOI amendment
under consideration.
Certain types of SOI amendments are likely exempt from CEQA review. Examples are
SOI expansions that include territory already within the bounds or service area of an
agency, SOI reductions, and zero SOIs. SOI expansions for limited purpose agencies
that provide services (e.g., fire protection, levee protection, cemetery, and resource
conservation) needed by both rural and urban areas are typically not considered growth-
inducing and are likely exempt from CEQA. Similarly, SOI expansions for districts
serving rural areas (e.g., irrigation water) are typically not considered growth-inducing.
Remy et al. write
In City of Agoura Hills v. Local Agency Formation Commission (2d
Dist.1988) 198 Cal.App.3d480, 493-496 [243 Cal.Rptr.740] (City of
Agoura Hills), the court held that a LAFCO’s decision to approve a city’s
sphere of influence that in most respects was coterminous with the city’s
4-M Water District MSR-SOI 24
Colusa LAFCO
existing municipal boundaries was not a “project” because such action
did not entail any potential effects on the physical environment.42
Since the recommendation is to keep the Sphere of Influence for the 4-M Water District
the same and the Boundary of the District there will be no environmental impacts from
the adoption of the Sphere and no environmental document is required.
5.2 Land Use
5.2.1 Present and Planned Land Uses in the 4-M Water District Area, Including
43
Agricultural and Open Space Lands
The Colusa County General Plan and Zoning for the 4-M Water District area are shown
on maps at the end of this report.
The zoning Designations are Agriculture Preserve (80 acre minimum parcel size) and
Exclusive Agriculture (40 acre minimum parcel size).
The land use in the area is agricultural. The General Plan and the zoning of Colusa
County support the agricultural use of this land. There is no conflict with the 4-M Water
District and the Colusa County General Plan and Zoning.
5.2.2 SOI Determinations Present and Planned Land Use for 4-M Water District
1-1] The Sphere of Influence for the 4-M Water District will be the same as the District
Boundary.
1-2] There are no conflicts with the 4-M Water District and existing or proposed land
uses in the area because the Colusa County General Plan designates the area
for agricultural land use.
1-3] The 4-M Water District has water-rights and water to serve the land within the
present boundary but does not have the capacity to substantially expand.
1-4] There are no logical areas for expansion of the 4-M Water District since other
districts serve most of the surrounding land.
1-5] If the 4-M Water District proposes an annexation or detachment in the future a
revised Municipal Service Review and Sphere of Influence will be required.
42 Remy, Michael H., Tina A. Thomas, James G. Moose, Whitman F. Manley, Guide to CEQA, Solano Press Books, Point
Arena, CA, February 2007, page 111.
43 California Government Code Section 56425 (e)(1)
4-M Water District MSR-SOI 25
Colusa LAFCO
5.3 Present and Probable Need for Public Facilities and Services in the 4-M
Water District Area44
5.3.1 Service Need for 4-M Water District
The lands within the 4-M Water District need the services that are provided. There is no
additional water to provide service for more land. Therefore, the Sphere of Influence for
the 4-M Water District will be the same as the District Boundary with the proposed
detachment and annexation.
5.3.2 SOI Determinations for Facilities and Services Probable Need for
4-M Water District
2-1] The land within the 4-M Water District will need irrigation water as long as
agriculture is a profitable business in Northern California.
2-2] The 4-M Water District makes a valuable contribution to the local economy for
Colusa County by providing water for agriculture. This generates many jobs.
5.4 Present Capacity of Public Facilities and Adequacy of Public Services45
5.4.1 Facilities and Capacity
The 4-M District’s water-rights are established by agreements with the US Bureau of
Reclamation. However, if there is not sufficient water stored at Shasta Dam (due to lack
of precipitation) the District could still face a cut in the water supply.
5.4.2 SOI Determinations for Public Facilities Present and Future
Capacity for 4-M Water District
3-1] The 4-M Water District has adequate water rights to provide irrigation water to
the landowners as it is available from the USBR for the foreseeable future.
3-2] The District promotes water conservation and the use of technology to prevent
waste.
44 California Government Code Section 56425 (e)(2)
45 California Government Code Section 56425 (e)(3)
4-M Water District MSR-SOI 26
Colusa LAFCO
46
5.5 Social or Economic Communities of Interest
5.5.1 4-M Water District
The 4-M Water District does not serve a community in the traditional sense of the word
because there are only ten residents within the District. There is an economic community
of landowners who formed the District and who benefit from the agricultural water
service provided.
5.5.2 SOI Determinations for Social or Economic Communities of Interest for
4-M Water District
4-1] Most of the landowners for the 4-M Water District live within the District.
5.6 Disadvantaged Unincorporated Community Status47
5.6.1 Disadvantaged Unincorporated Communities
Senate Bill 244 was a significant piece of LAFCO related legislation passed in 2011.
This bill required LAFCO to make determinations regarding “Disadvantaged
Unincorporated Communities” (DUCs). Disadvantaged Unincorporated Communities are
defined as inhabited territory that constitutes all or a portion of a community with an
annual median household income that is less than 80 percent of the statewide annual
household income (MHI).
State law requires identification and analysis of service issues within DUCs as part of
municipal service reviews (MSRs) and sphere of influence (SOI) reviews. State law also
places restrictions on annexations to cities if the proposed annexation is adjacent to a
DUC.
There are only ten residents within the 4-M Water District.
5.6.2 4-M Water District Disadvantaged Unincorporated Community Status
5-1] There are no DUCs within the 4-M Water District.
46 California Government Code Section 56425 (e)(4)
47 California Government Code Section 56425 (e)(5)
4-M Water District MSR-SOI 27
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ABBREVIATIONS
AB Assembly Bill
AF Acre-foot (of water)
CKH Act Cortese-Knox-Hertzberg Local Government Reorganization Act of 2000
CEQA California Environmental Quality Act
cfs cubic feet per second
CVP Central Valley Project
District 4-M Water District
DUC Disadvantaged Unincorporated Community
EIR Environmental Impact Report (California)
EIS Environmental Impact Statement (US)
FWS U.S. Fish and Wildlife Service
I-5 Interstate 5
LAFCO Local Agency Formation Commission
LAIF Local Agency Investment Fund
MHI Median Household Income
MSR Municipal Service Review
NMFS National Marine Fisheries Service
RRA Reclamation Reform Act of 1982
SOI Sphere of Influence
TCC Tehama-Colusa Canal
TCCA Tehama-Colusa Canal Authority
USBR United States Bureau of Reclamation
4-M Water District MSR-SOI 28
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DEFINITIONS
Acre foot: The volume of water that will cover one acre to a depth of one foot, 325,850 U.S.
Gallons or 1,233,342 liters (approximately).
Agriculture: Use of land for the production of food and fiber, including the growing of crops
and/or the grazing of animals on natural prime or improved pasture land.
Aquifer: An underground, water-bearing layer of earth, porous rock, sand, or gravel, through
which water can seep or be held in natural storage. Aquifers generally hold sufficient water to be
used as a water supply.
Bond: An interest-bearing promise to pay a stipulated sum of money, with the principal amount
due on a specific date. Funds raised through the sale of bonds can be used for various public
purposes.
Bureau of Reclamation: (USBR, Reclamation, BOR). The mission of the Bureau of Reclamation
is to manage, develop, and protect water and related resources in an environmentally and
economically sound manner in the interest of the American public.48
California Environmental Quality Act (CEQA): A State Law requiring State and local agencies
to regulate activities with consideration for environmental protection. If a proposed activity has the
potential for a significant adverse environmental impact, an environmental impact report (EIR)
must be prepared and certified as to its adequacy before taking action on the proposed project.
Central Valley Project: The Central Valley Project, one of the Nation's major water conservation
developments, extends from the Cascade Range in the north to the semi-arid but fertile plains
along the Kern River in the south. Initial features of the project were built primarily to protect the
Central Valley from crippling water shortages and menacing floods, but the CVP also improves
Sacramento River navigation, supplies domestic and industrial water, generates electric power,
conserves fish and wildlife, creates opportunities for recreation, and enhances water quality.49
Drip irrigation: Drip irrigation, also known as trickle irrigation or micro-irrigation is an irrigation
method that minimizes the use of water and fertilizer by allowing water to drip slowly to the roots
of plants, either onto the soil surface or directly onto the root zone, through a network of valves,
pipes, tubing, and emitters. Modern drip irrigation has arguably become the most important
innovation in agriculture since the invention of the impact sprinkler in the 1930s, which replaced
wasteful flood irrigation. Drip irrigation may also use devices called micro-spray heads, which
spray water in a small area, instead of dripping emitters. These are generally used on tree and
vine crops with wider root zones.50
Exempt land: Irrigation land in a district to which the acreage limitation and pricing provisions of
Reclamation law do not apply.51
Gravity flow: flow of water in a pipe on a descending path.
Irrigate: To supply (dry land) with water by means of ditches, pipes, or streams; water artificially.
Irrigation system: a complete set of system components including the water source, the water
distribution network, and the general irrigation equipment.
48 http://www.usbr.gov/library/glossary/#hmr
49 http://www.usbr.gov/dataweb/html/cvp.html
50 http://en.wikipedia.org/wiki/Drip_irrigation
51 http://www.usbr.gov/library/glossary/#hmr
4-M Water District MSR-SOI 29
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Land Use Classification: A system for classifying and designating the appropriate use of
properties.
Lateral: a pipe line other than the main water pressure line used to move water to the various
delivery devices.
Local Agency Formation Commission (LAFCO): A five-or seven-member commission within
each county that reviews and evaluates all proposals for formation of special districts,
incorporation of cities, annexation to special districts or cities, consolidation of districts, and
merger of districts with cities. Each county’s LAFCO is empowered to approve, disapprove, or
conditionally approve such proposals. The LAFCO members generally include two county
supervisors, two city council members, and one member representing the general public. Some
LAFCOs include two representatives of special districts.
Operations and maintenance costs: The ongoing, repetitive costs of operating and maintaining
a water system.
Pumping plant: Facility that lifts water up and over hills.
Pumplift (pumping lift): The vertical distance that a pump will raise waters. Distance water must
be lifted in a well from the pumping level to the ground surface.
Sphere of Influence (SOI): The probable physical boundaries and service area of a local
agency, as determined by the Local Agency Formation Commission (LAFCO) of the county.
Tehama-Colusa Canal: The Tehama Colusa Canal is 110 miles long and serves 14 water
districts. The system was designed to divert water from the Sacramento River into the settling
basin by virtue of a dam across the Sacramento River located in Red Bluff, California.
Tehama-Colusa Canal Authority: The Tehama-Colusa Canal Authority (TCCA) is a Joint
Powers Agency of irrigation districts which operates and maintains the Tehama-Colusa and
Corning Canals of the federal Central Valley Project (CVP) under a long-term contract with the
Department of the Interior. Through these canals, the TCCA delivers CVP water to 17 districts
which serve approximately 300,000 acres of farmland in Tehama, Glenn, Colusa and Yolo
Counties.52
Water transfers: Selling or exchanging water or water rights among individuals or agencies.
Artificial conveyance of water from one area to another.
Water user: Any individual, district, association, government agency, or other entity that uses
water supplied from a Reclamation project.
Water year (WY): Period of time beginning October 1 of one year and ending September 30 of
the following year and designated by the calendar year in which it ends. A calendar year used for
water calculations. The US Bureau of Reclamation water year is March 1st to February 28th and
October 1st to September 30th is the water account year.
Watershed: The land area from which water drains into a stream, river, or reservoir.
Zoning: The division of a city by legislative regulations into areas, or zones, that specify
allowable uses for real property and size restrictions for buildings within these areas; a program
that implements policies of the general plan.
52 http://www.delta.dfg.ca.gov/afrp/acronym_template.asp?code=371
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REFERENCES
4-M Water District, PO Box 338, Maxwell, CA 95955, October 29, 2015
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water
District, Annual Audit for Fiscal Year Ended June 30, 2014, Prepared by Janet Dawley,
Special Districts Auditor, June 29, 2015.
Colusa County Auditor-Controller, 546 Jay Street, Suite 202, Colusa, CA 95932, 4-M Water
District, Annual Audit for Fiscal Year Ended June 30, 2015, December 10, 2015.
Colusa County General Plan, Adopted July 31, 2012.
Colusa County, “Colusa County Groundwater Management Plan”, September 2008, by Wood
Rodgers Inc.
Colusa County Department of Agriculture, 2014 Colusa County Crop Report, Joseph J. Damiano,
Agricultural Commissioner, 100 Sunrise Blvd, Suite F, Colusa CA 95932.
http://en.wikipedia.org/wiki/Colusa_County,_California
http://quickfacts.census.gov/qfd/states/06/06011.html
http://www.colusa-sun-herald.com/news/corning_1705___article.html/issue_canal.html
http://www.csus.edu/indiv/j/jensena/sfp/sa11/yol2/col/colusa.htm
http://www.delta.dfg.ca.gov/afrp/acronym_template.asp?code=371
Remy, Michael H., Tina A. Thomas, James G. Moose, Whitman F. Manley, Guide to CEQA,
Solano Press Books, Point Arena, CA, February 2007, page 111.
State of California, Employment Development Department, Labor Market Information Division,
Phone: 916-262-162, http.//www.labormarketinfo.edd.ca.gov, October 16, 2015.
State of California, Department of Fish and Game:
http://www.delta.dfg.ca.gov/afrp/acronym_template.asp?code=371
Tehama-Colusa Canal Authority,
Jeff Sutton, General Manager, PO Box 1025, Willows CA 95988, Phone 530-934-2125, Fax 530-
934-2355, Phone: August 14, 2008 Fax August 15, 2008.
J. Mark Atlas, Legal Counsel, Phone; 530-934-5416, E-Mail: matlas@jmatlaslaw.com, 332 W.
Sycamore Street, Willows CA 95988
Kayla Cushman, E-Mail: kchusman@tccanal.com, November 9, 2015
US Census Bureau, http://quickfacts.census.gov/qfd/states/06/06011.html, October 26, 2015.
US Bureau of Reclamation: http://www.usbr.gov/mp/search/listsrvc.cfm?vSearch2=C
Jacob Berens, jberens@usbr.gov, November 2, 2015
US Natural Resources Conservation Service, Soil Survey of Colusa County California.
4-M Water District MSR-SOI 31
Colusa LAFCO
PREPARERS
Colusa LAFCO, John Benoit, Executive Officer
PO Box 2694, Granite Bay CA 95746
Phone: 916-797-6003 johnbenoit@surewest.net
Christy Leighton, Planning Consultant
555 East Willow Street, Willows CA 95988
Phone: 530-934-4597 christyleighton@sbcglobal.net
4-M Water District MSR-SOI 32
Colusa LAFCO
APPENDIX A SOIL INFORMATION53
102—Capay clay loam, 0 to 1 percent slopes
Map Unit Setting
General location: On the west side of the Colusa Basin near the
towns of Williams and Maxwell.
Map unit geomorphic setting: Basin floor
Elevation: 25 to 140 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Capay clay loam—90 percent Minor components: 10 percent
Major Component Description: Capay clay loam
Component geomorphic setting: Basin floor
Parent material: Alluvium
Typical vegetation: Irrigated cropland
Component Properties and Qualities
Slope: 0 to 1 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: None noted
Slowest permeability class: Very slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 9.9 inches (High)
Component Hydrologic Properties
Present flooding: Rare
Present ponding: None
Current water table: Present
Natural drainage class: Moderately well drained
Altered hydrology:
Water tables have been lowered by rice drainage ditches. Most of these areas were
rarely or occasionally flooded under natural conditions. There are no soil redoximorphic
features above 36 inches.
Interpretive Groups: Land capability irrigated: 2s-5
Land capability nonirrigated: 4s-5
53 US Natural Resources Conservation Service, Soil Survey of Colusa County California.
4-M Water District MSR-SOI 33
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112—Westfan loam, 0 to 2 percent slopes
Map Unit Setting
General location: Near Williams and Arbuckle
Map unit geomorphic setting: Alluvial fan
Elevation: 65 to 150 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Westfan loam—80 percent Minor components: 20 percent
Major Component Description: Westfan loam
Component geomorphic setting: Alluvial fan
Parent material: Alluvium
Typical vegetation: Irrigated cropland
Component Properties and Qualities
Slope: 0 to 2 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: None noted
Slowest permeability class: Moderately slow
Salinity: Not saline
Sodicity: Sodic within 40 inches
Available water capacity: About 8.8 inches (High)
Component Hydrologic Properties
Present flooding: Rare
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: 1
Land capability nonirrigated: 4s
4-M Water District MSR-SOI 34
Colusa LAFCO
127—Mallard clay loam, 0 to 1 percent slopes
Map Unit Setting
General location: Near the towns of Arbuckle and Williams
Map unit geomorphic setting: Alluvial fan
Elevation: 45 to 140 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Mallard clay loam—85 percent
Minor components: 15 percent
Major Component Description Mallard clay loam
Component geomorphic setting: Lower alluvial fan
Parent material: Alluvium
Typical vegetation: Irrigated cropland
Component Properties and Qualities
Slope: 0 to 1 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: None noted
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 10.4 inches (Very high)
Component Hydrologic Properties
Present flooding: Rare
Present ponding: None
Current water table: Present
Natural drainage class: Somewhat poorly drained
Altered hydrology: Water tables have been lowered by rice drainage ditches.
Interpretive Groups
Land capability irrigated: 2w-3
Land capability nonirrigated: 4w-3
4-M Water District MSR-SOI 35
Colusa LAFCO
144—Hillgate clay loam, 0 to 2 percent slopes
Map Unit Setting
General location: Western margins of the Sacramento Valley,
west of Williams and north to the Glenn County boundary.
Map unit geomorphic setting: Terrace
Elevation: 130 to 450 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Hillgate clay loam—85 percent Minor components: 15 percent
Major Component Description: Hillgate clay loam
Component geomorphic setting: Terrace
Parent material: Alluvium
Typical vegetation: Irrigated cropland
Component Properties and Qualities
Slope: 0 to 2 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: Abrupt textural change—19 inches
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 3.6 inches (Low)
Component Hydrologic Properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Interpretive Groups: Land capability irrigated: 2s-3
Land capability nonirrigated: 4s-3
4-M Water District MSR-SOI 36
Colusa LAFCO
145—Hillgate loam, 0 to 2 percent slopes
General location: West of Williams and Maxwell in the Sacramento Valley and in the
foothill valleys.
Map unit geomorphic setting: Terrace
Elevation: 130 to 450 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Hillgate loam—90 percent
Minor components: 10 percent
Major Component Description: Hillgate loam
Component geomorphic setting: Terrace
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Component Properties and Qualities
Slope: 0 to 2 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: Abrupt textural change—19 inches
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 3.0 inches (Low)
Component Hydrologic Properties
Present flooding: None
Present ponding: None
Current water table: None noted.
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: 2s-3
Land capability nonirrigated: 4s-3
4-M Water District MSR-SOI 37
Colusa LAFCO
147—Hillgate loam, 1 to 5 percent slopes
Map Unit Setting
General location: West of Arbuckle and foothill valleys
Geomorphic setting: Terraces
Elevation: 95 to 400 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Composition: Hillgate loam—90 percent Minor components—10 percent
Major Component Description: Hillgate loam
Geomorphic setting: Terraces
Parent material: Alluvium
Typical vegetation: Irrigated crops
Properties and qualities
Slope: 1 to 5 percent
Runoff rate: Low
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Abrupt textural change— 19 inches
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 3.0 inches (low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification: Irrigated: 2e-3
4-M Water District MSR-SOI 38
Colusa LAFCO
155—Alcapay clay, 0 to 1 percent slopes
Map Unit Setting
General location: North of Maxwell, near Bagley Road and east of Williams.
Geomorphic setting: Basin floors
Elevation: 45 to 110 feet
Mean annual precipitation: 14 to 16 inches
Mean annual air temperature: 61 to 63 degrees F
Frost-free period: 225 to 250 days
Composition Alcapay clay—90 percent Minor components—10 percent
Major Component Description: Alcapay clay
Geomorphic setting: Basin floors
Parent material: Alluvium
Typical vegetation: Irrigated crops
Properties and qualities
Slope: 0 to 1 percent
Runoff rate: Very low
Percentage of the surface covered by rock fragments: None
Slowest permeability class: Slow
Salinity: Saline within a depth of 40 inches
Sodicity: Sodic within a depth of 40 inches
Available water capacity: About 8.9 inches (high)
Hydrologic properties
Present flooding: Rare
Present ponding: None
Current water table: Present
Natural drainage class: Somewhat poorly drained
Altered hydrology: Water tables have been lowered by drainage ditches used in the
production of rice.
Land capability classification: Irrigated: 3w-5, Nonirrigated: 4w-5
Management Major Use: Irrigated crops
4-M Water District MSR-SOI 39
Colusa LAFCO
200—Clear Lake clay
Map Unit Setting
General location: Small areas in foothill basins
Geomorphic setting:
Basins Elevation: 175 to 1,360 feet
Mean annual precipitation: 14 to 20 inches
Mean annual air temperature: 57 to 63 degrees F.
Frost-free period: 185 to 250 days
Composition: Clear Lake clay, occasionally flooded—90 percent
Minor components—10 percent
Major Component Description Clear Lake clay, occasionally flooded
Geomorphic setting: Basin floors
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Properties and qualities
Slope: 0 to 2 percent
Runoff rate: Very low
Percentage of the surface covered by rock fragments: None
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 8.9 inches (high)
Hydrologic properties
Present flooding: Occasional
Present ponding: None
Current water table: Present
Natural drainage class: Poorly drained
Altered hydrology: Flood-control structures on the Sacramento River have changed
flooding frequency and duration and lowered water tables. The soil has been drained by
stream incisement.
Land capability classification:
Irrigated: 3w-5
Nonirrigated: 4w-5
Use and Management: Major use: Livestock grazing
4-M Water District MSR-SOI 40
Colusa LAFCO
204—Capay clay, 0 to 3 percent slopes, occasionally flooded
General location: Small areas in foothill basins
Geomorphic setting: Basin
Elevation: 175 to 350 feet
Mean annual precipitation: 16 to 22 inches
Mean annual air temperature: 57 to 61 degrees F.
Frost-free period: 225 to 250 days
Capay clay, occasionally flooded—90 percent
Minor components: 10 percent
Major Component Description Capay clay, occasionally flooded
Component geomorphic setting: Basin floor
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Component Properties and Qualities
Slope: 0 to 3 percent
Runoff: High
Surface features: Polygonal surface cracking; polygons are approximately 24
inches in diameter
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: None noted
Slowest permeability class: Very slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 8.9 inches (High)
Component Hydrologic Properties
Present flooding: Occasional
Present ponding: None
Current water table: Present
Natural drainage class: Moderately well drained
Interpretive Groups
Land capability irrigated: 2w-5
Land capability nonirrigated: 4w-5
4-M Water District MSR-SOI 41
Colusa LAFCO
205—Capay clay, 0 to 3 percent slopes
Map Unit Setting
General location: Foothill basins
Geomorphic setting: Basins
Elevation: 175 to 1,200 feet
Mean annual precipitation: 16 to 28 inches
Mean annual air temperature: 57 to 61 degrees F
Frost-free period: 225 to 250 days
Composition Capay clay—90 percent
Minor components—10 percent
Major Component Description Capay clay
Geomorphic setting: Basin floors
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Properties and qualities
Slope: 0 to 3 percent
Runoff rate: High
Surface features: Polygonal surface cracking; polygons are approximately 24 inches
in diameter.
Percentage of the surface covered by rock fragments: None
Slowest permeability class: Very slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 8.9 inches (high)
Hydrologic properties
Present flooding: Rare
Present ponding: None
Current water table: Present
Natural drainage class: Moderately well drained
Land capability classification: Irrigated: 2s-5, Nonirrigated: 4s-5
Management: Major use: Livestock grazing
4-M Water District MSR-SOI 42
Colusa LAFCO
206—Capay clay, 5 to 9 percent slopes
Map Unit Setting
General location: Foothill basins
Geomorphic setting: Basins
Elevation: 175 to 400 feet
Mean annual precipitation: 16 to 22 inches
Mean annual air temperature: 57 to 61 degrees
Frost-free period: 225 to 250 days
Composition Capay clay—90 percent Minor components—10 percent
Major Component Description Capay clay
Geomorphic setting: Toeslopes
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Properties and qualities
Slope: 5 to 9 percent
Runoff rate: Very low
Surface features: Polygonal surface cracking; polygons are approximately 24 inches
in diameter.
Percentage of the surface covered by rock fragments: None
Slowest permeability class: Very slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 8.9 inches (high)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: Present
Natural drainage class: Moderately well drained
Land capability classification
Irrigated: 2s-5, Nonirrigated: 4s-5
Use and Management
Major use: Livestock grazing
4-M Water District MSR-SOI 43
Colusa LAFCO
210—Corval loam, 0 to 3 percent slopes
General location: None noted.
Geomorphic setting: Flood plain and alluvial fan
Elevation: 200 to 1400 feet
Mean annual precipitation: 14 to 22 inches
Mean annual air temperature: 57 to 63 degrees F.
Frost-free period: 185 to 250 days
Corval loam—85 percent
Minor components: 15 percent
Major Component Description Corval loam
Component geomorphic setting: Flood plain, alluvial fan
Parent material: Alluvium
Typical vegetation: Annual grasses and forbs
Component Properties and Qualities
Slope: 0 to 3 percent
Runoff: Very low
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: None noted
Slowest permeability class: Moderately slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 11.0 inches (Very high)
Component Hydrologic Properties
Present flooding: Rare
Present ponding: None
Current water table: None noted.
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: 1
Land capability nonirrigated: 4s
4-M Water District MSR-SOI 44
Colusa LAFCO
213—Ayar clay, 15 to 30 percent slopes
Map Unit Setting
General location: West of Maxwell, in the lower foothills and near Spring Valley.
Geomorphic setting: Hills
Elevation: 150 to 505 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Composition Ayar clay—85 percent Minor components—15 percent
Major Component Description: Ayar clay
Geomorphic setting: Side slopes of hills
Parent material: Calcareous residuum weathered from sandstone
Typical vegetation: Annual grasses and forbs
Properties and qualities
Slope: 15 to 30 percent
Runoff rate: Medium
Surface features: Polygonal cracking pattern; polygons are approximately 24 inches
in diameter.
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (paralithic)—60 to 80 inches
Slowest permeability class: Slow above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 9.4 inches (high)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification: Irrigated: 4e-5, Nonirrigated: 4e-5
4-M Water District MSR-SOI 45
Colusa LAFCO
215—Altamont-Sehorn complex, 15 to 30 percent slopes
General location: Lower Coast Range foothills on steep ridges
Map unit geomorphic setting: Hill
Elevation: 200 to 800 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Altamont silty clay—45 percent
Sehorn silty clay—35 percent
Minor components: 20 percent
Major Component Description--Altamont silty clay
Component geomorphic setting: Lower sideslopes and north slopes of hill
Parent material: Residuum weathered from sandstone-shale
Typical vegetation: Annual grasses with scattered blue oak
Component Properties and Qualities
Slope: 15 to 30 percent
Runoff: Medium
Surface features: Polygonal cracking pattern, approximately 24 inches in diameter.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: Bedrock (paralithic)—40 to 60 inches
Slowest permeability class: Slow above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 7.9 inches (High)
Component Hydrologic Properties
Present flooding: None
Present ponding: None
Current water table: None noted.
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: Not calculated
Land capability nonirrigated: 4e-5
4-M Water District MSR-SOI 46
Colusa LAFCO
218—Sehorn-Altamont complex, 30 to 50 percent slopes
Map Unit Setting
General location: The lower Coast Range foothills on steep ridges
Geomorphic setting: Hills
Elevation: 200 to 800 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F
Frost-free period: 225 to 250 days
Composition: Sehorn silty clay—45 percent
Altamont silty clay—35 percent
Minor components—20 percent
Major Component Description Sehorn silty clay
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Blue oak and annual grasses
Properties and qualities
Slope: 30 to 50 percent
Runoff rate: High
Surface features: Polygonal cracking pattern; the polygons are approximately 24
inches in diameter.
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—20 to 40 inches
Slowest permeability class: Slow above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 4.5 inches (low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification
Irrigated: Not calculated
Nonirrigated: 6e
4-M Water District MSR-SOI 47
Colusa LAFCO
220—Altamont silty clay, 5 to 9 percent slopes
General location: West of Maxwell in the lower foothills and Spring Valley
Geomorphic setting: Hill
Elevation: 200 to 800 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Altamont silty clay—85 percent
Minor components: 15 percent
Major Component Description Altamont silty clay
Component geomorphic setting: Lower sideslopes and north slopes of hill
Parent material: Residuum weathered from sandstone-shale
Typical vegetation: Annual grasses with scattered blue oak
Component Properties and Qualities
Slope: 5 to 9 percent
Runoff: Medium
Surface features: Polygonal cracking pattern, approximately 24 inches in
diameter.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: Bedrock (paralithic)—40 to 60 inches
Slowest permeability class: Slow above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 7.9 inches (High)
Component Hydrologic Properties
Present flooding: None
Present ponding: None
Current water table: None noted.
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: 2e-5 Land capability nonirrigated: 4e-5
4-M Water District MSR-SOI 48
Colusa LAFCO
230—Corning clay loam, 1 to 5 percent slopes
General location: Small areas scattered throughout the foothills
Geomorphic setting: Terrace
Elevation: 150 to 1295 feet
Mean annual precipitation: 14 to 22 inches
Mean annual air temperature: 57 to 63 degrees F.
Frost-free period: 225 to 250 days
Corning clay loam—90 percent
Minor components: 10 percent
Major Component Description Corning clay loam
Component geomorphic setting: Terrace
Parent material: Alluvium
Typical vegetation: Annual grasses with scattered blue oak
Component Properties and Qualities
Slope: 1 to 5 percent
Runoff: Medium
Surface features: None noted.
Percent area covered by surface coarse fragments: None noted.
Depth to restrictive feature: Abrupt textural change—9 inches
Slowest permeability class: Slow
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 1.7 inches (Very low)
Component Hydrologic Properties
Present flooding: None
Present ponding: None
Current water table: None noted.
Natural drainage class: Well drained
Interpretive Groups
Land capability irrigated: 3e-5
Land capability nonirrigated: 4e-5
4-M Water District MSR-SOI 49
Colusa LAFCO
253—Millsholm-Altamont-Rock outcrop complex, 5 to 15 percent slopes
Map Unit Setting
General location: The lower Coast Range foothills
Geomorphic setting: Hills
Elevation: 180 to 350 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F
Frost-free period: 225 to 250 days
Composition Millsholm loam—55 percent Altamont silty clay—20 percent Rock
outcrop—15 percent Minor components—10 percent
Major Component Description Millsholm loam
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Annual grasses and scattered oak
Properties and qualities
Slope: 5 to 15 percent
Runoff rate: Low
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—10 to 20 inches
Slowest permeability class: Moderate above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 2.1 inches (very low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification
Irrigated: Not calculated
Nonirrigated: 6e
4-M Water District MSR-SOI 50
Colusa LAFCO
255—Millsholm-Rock outcrop complex, 9 to 30 percent slopes
Map Unit Setting
General location: The lower Coast Range foothills.
Geomorphic setting: Hills
Elevation: 200 to 400 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Composition Millsholm loam—55 percent Rock outcrop—35 percent Minor
components—10 percent
Major Component Description: Millsholm loam
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Annual grasses and scattered oak
Properties and qualities
Slope: 9 to 30 percent
Runoff rate: Medium
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—10 to 20 inches
Slowest permeability class: Moderate above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 2.1 inches (very low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification:
Irrigated: 6e
Nonirrigated: 6e
4-M Water District MSR-SOI 51
Colusa LAFCO
257—Millsholm-Capay complex, 3 to 9 percent slopes
Map Unit Setting
General location: The lower Coast Range foothills
Geomorphic setting: Hills
Elevation: 25 to 400 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F
Frost-free period: 225 to 250 days
Composition
Millsholm loam—50 percent
Capay clay—35 percent
Minor components—15 percent
Major Component Description: Millsholm loam
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Annual grasses and scattered oak
Properties and qualities
Slope: 3 to 9 percent
Runoff rate: Medium
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—10 to 20 inches
Slowest permeability class: Moderate above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 2.1 inches (very low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification
Irrigated: 6e Nonirrigated: 6e
4-M Water District MSR-SOI 52
Colusa LAFCO
332—Millsholm-Rock outcrop association, 30 to 75 percent slopes
Map Unit Setting
General location: Foothills east of East Park Reservoir and foothills near the Glenn
County boundary
Geomorphic setting: Alluvial fans
Elevation: 400 to 600 feet
Mean annual precipitation: 14 to 18 inches
Mean annual air temperature: 61 to 63 degrees F.
Frost-free period: 225 to 250 days
Composition: Millsholm loam—50 percent
Rock outcrop—40 percent
Minor components—10 percent
Major Component Description: Millsholm loam
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Annual grasses and scattered oak
Properties and qualities
Slope: 30 to 75 percent
Runoff rate: Medium
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—10 to 20 inches
Slowest permeability class: Moderate above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 2.1 inches (very low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification
Irrigated: Not calculated
Nonirrigated: 7e
4-M Water District MSR-SOI 53
Colusa LAFCO
334—Millsholm-Contra Costa association, 30 to 75 percent slopes
Map Unit Setting
General location: Foothill ridges
Geomorphic setting: Hills
Elevation: 275 to 1,750 feet
Mean annual precipitation: 14 to 24 inches
Mean annual air temperature: 57 to 63 degrees F
Frost-free period: 225 to 250 days
Composition
Millsholm loam—70 percent
Contra Costa loam—15 percent
Minor components—15 percent
Major Component Description Millsholm loam
Geomorphic setting: Side slopes of hills
Parent material: Residuum weathered from sandstone and shale
Typical vegetation: Annual grasses and scattered oak
Properties and qualities
Slope: 30 to 75 percent, southeast to west aspects
Runoff rate: High
Percentage of the surface covered by rock fragments: None
Depth to restrictive feature: Bedrock (lithic)—10 to 20 inches
Slowest permeability class: Moderate above the bedrock
Salinity: Not saline
Sodicity: Not sodic
Available water capacity: About 2.1 inches (very low)
Hydrologic properties
Present flooding: None
Present ponding: None
Current water table: None noted
Natural drainage class: Well drained
Land capability classification
Irrigated: Not calculated
Nonirrigated; 7e
4-M Water District MSR-SOI 54
Colusa LAFCO
MAPS
Figure 1 US Bureau of Reclamation Map 4-M Water District
4-M Water District MSR-SOI 55
Colusa LAFCO
Figure 2 Location Map 4-M Water District
4M Water District
Location GLENN COUNTY
Princeton BUTTE
COUNTY
Stonyford 45
COLUSA COUNTY
lanaCasuloC-nnelG
Maxwell
Sacramento
River
SUTTER
Colusa COUNTY
5
C
4M
ol u
W
sa
a t
C
er
o
D
un
is
t
t
y
r i
W
ct
ater
C
Di
O
s
L
tr
U
i
A
ct
N
KE
TY
20 Tehama-ColusaCanal
Williams
ColusaBasinDrainageCanal
45
20
Grimes
Cortina Water District
Davis Water District
20
Glenn Valley Water District Arbuckle
La Grande Water District College City
Maxwell Irrigation District
Westside Water District 16
Princeton-Codora-Glenn Irrigation District
Holthouse Water District
Glenn-Colusa Irrigation District
4-M Water District MSR-SOI 56
Colusa LAFCO
Figure 3 Boundary and Adopted Sphere of Influence (Feb 4, 2016)
4M Water District
Boundary and Sphere of Influence
0 0.5 1
Miles
District Boundary and Sphere of Influence from Colusa County LAFCO 4m Water District and SOI
USGS Quadrangles: Manor Slough, Sites, Maxwell, and Williams
Map Produced November, 2015
4-M Water District MSR-SOI 57
Colusa LAFCO
Figure 4 SOILS
4M Water District
Soils
257 206 257
145
215 255
204
205 255 230
215
145
332 145 204 230
215
204
200 204
255 102
210 220
218 257 145
210
253 205215 230
147 204 215
255 210 102 127
652
147 210 220
145
127
205
145
102
253 112 144
332 145
Soil Type
205 102 - Capay clay loam, 0 to 1 percent slopes
206 213 112 - Westfan loam, 0 to 2 percent slopes
215
215 334 127 - Mallard clay loam, 0 to 1 percent slopes
210 215 144 - Hillgate clay loam, 0 to 2 percent slopes
652 215 145 - Hillgate loam, 0 to 2 percent slopes, MLRA 17
147 - Hillgate loam, 1 to 5 percent slopes
155 - Alcapay clay, 0 to 1 percent slopes
200 - Clear Lake clay, drained, 0 to 8 percent slopes, MLRA 15
204 - Capay clay, 0 to 3 percent slopes, occasionally flooded
205 - Capay clay, 0 to 3 percent slopes
206 - Capay clay, 5 to 9 percent slopes
210 - Corval loam, 0 to 3 percent slopes
213 - Ayar clay, 15 to 30 percent slopes
215 - Altamont-Sehorn complex, 15 to 30 percent slopes
218 - Sehorn-Altamont complex, 30 to 50 percent slopes
220 - Altamont silty clay, 5 to 9 percent slopes
230 - Corning clay loam, 1 to 5 percent slopes
253 - Millsholm-Altamont-Rock outcrop complex, 5 to 15 percent slopes
255 - Millsholm-Rock outcrop complex, 9 to 30 percent slopes
257 - Millsholm-Capay complex, 3 to 9 percent slopes
332 - Millsholm-Rock outcrop association, 30 to 75 percent slopes
334 - Millsholm-Contra Costa association, 30 to 75 percent slopes
0 0.5 1
Miles 652 - Water
District Boundary and Sphere of Influence from Colusa County LAFCO 4m Water District and SOI
Soil data from Natural Resources Conservation Service, USDA
Map Produced November, 2015
4-M Water District MSR-SOI 58
Colusa LAFCO
Figure 5 Colusa County General Plan
4M Water District
Colusa County General Plan
Maxwell-Sites Road
M
ills
O
D
a
d a o R re
rch
a rd
R o a d Finks Road
n le
y R
o a d
A ntelo
pe
tsa
m ffu
H
C
reek
Standard Road Canal
olusa
C
Glenn-
LurlineCreek
Bagley Road
GlennValleySloug
h
h
g
Sl
o u Teh La Grande Road
Valley a m
a
-C
Gle
n n o lu
sa
C a Manor Slough
n
a
l
General Plan
AG - Agricultural General
AU - Agricultural Upland
4m Water District and SOI
0 0.5 1 Parcel
Miles
Canal
District Boundary and Sphere of Influence from Colusa County LAFCO
General Plan: Colusa County 2012. Map Produced November, 2015
4-M Water District MSR-SOI 59
Colusa LAFCO
Figure 6, Colusa County Zoning
4M Water District
Colusa County Zoning
Maxwell-Sites Road
M
ills
O
D
a
d a o R re
rch
a rd R o a d Finks Road
n le
y R o a d
A
ntelo
p e
tsa
m
ffu
H
C
reek
Standard Road
Canal
Colusa
Glenn-
LurlineCreek
Bagley Road
Te
h
a
m
a
-C
Vall
ey
Sl
o u
g h o lu
sa
C
a
n a
l
La Grande Road
n
n
Gl e Manor Slough
ZONING
A-P: Agricultural Preserve
E-A: Exclusive Agriculture
Freshwater Road
4M Water District and SOI
0 0.5 1 Parcel
Miles
Canal
District Boundary and Sphere of Influence from Colusa County LAFCO
Zoning: Colusa County 2012. Map Produced November, 2015
4-M Water District MSR-SOI 60
Colusa LAFCO