PROJ00436

• Contract/PO #: C153669
• Contractor Name: Windsor Reservoir and Canal Company
• Contract Type: Loan
• Water District: 3
• County: Larimer
• Bill Number: EIA
• Loan Projects - Doc Type: Feasibility Study

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A.2. PREDOMINANT SOILS

There are four predominant soil groups in the service area as shown on Figure I-I and as described
below.

1 \ Soil Type I - deep, nearly level to moderately sloping, well drained sandy loams and loams with
high to moderate available water capacity. This soil has moderate (0.6 to 2.0 in/hr) and
moderately rapid (2.0 to 6.0 in/hr) permeability. The available water capacity is high (0.13 to 0.18
in/in of soil or more than 7.5 inches per 5-foot soil profile) to moderate (0.8 to 0.13 infin of soil
or 5 to 7.5 inches per 5-foot soil profile).

Soils in this group are in the Land Capability Subclass IIIe and He when irrigated and IVe and Vie
nonirrigated.

The soils in this group are located in the eastern portion of the service area and comprise
approximately 30% of the total acreage.

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2\ Soil Type H - deep to moderately deep, nearly level to moderately sloping, well drained sandy
loams and clay loams with high to moderate available water capacity. This soil has moderate (0.6
to 2.0 in/hr) and moderately rapid (2.0 to 6.0 in/hr) permeability. The available water capacity
is high (0.13 to 0.18 in/in of soil or more than 7.5 inches per 5-foot soil profile) to moderate (0.8
to 0.13 in/in of sailor 5 to 7.5 inches per 5-foot soil profile).

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Soils in this group are in the Land Capability Subclass IVe when irrigated VIe nonirrigated.

The soils in this group are located in the middle portion of the service area and comprise
approximately 40% of the total acreage in the service area.

3\ Soil Tvpe III - deep, level and nearly level, well drained loams and clay loams with high
available water capacity. This soil has low (0.2 to 0.6 in/hr) and moderate (0.6 to 2.0 in/hr)
permeability. The available water capacity is high (0.15 to 0.24 in/in of soil or 9 to 14.5 inches
per 5-foot soil profile).

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Soils in this group are in the Land Capability Subclass Hs and He when irrigated and IIIc
nonirrigated.

The soils in this group are located on high terraces and alluvial fans in the middle and eastern
portion of the service area and comprise approximately 15 % of the total acreage.

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4\ Soil Type IV - deep, nearly level, well drained to somewhat poorly drained loams, clay loams
and fine sandy loams with high available water capacity. This soil has low (0.2 to 0.6 in/hr) and
moderate (0.6 to 2.0 in/hr) permeability. The available water capacity is high (0.12 to 0.2 in/in
of soil or 7 to 12 inches per 5-foot soil profile).

Soils in this group vary in Land Capability Subclass and are mainly used for irrigated crops and
pasture. The soils in this group are located in the western portion of the service area and comprise

Page III-2
WR&C Feasibility Study

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