C153607L Feasibility Study

• Contract/PO #: C153607L
• Contractor Name: Trinchera Irrigation Company
• Contract Type: Loan
• Water District: 35
• County: Costilla
• Bill Number: SB 92-87
• Loan Projects - Doc Type: Feasibility Study

The soils in this group comprises approximately 14% of the total acreage in
the area served by Mountain Home Reservoir

3) Soil Type III - very deep, well drained loamy soils more than 20
inches deep over gravel with moderate to low available water capacity.
Permeability is mOderately rapid (2,0 to 6.0 in/hr), Available water
capacity is moderate (0.08 to 0.13 in/in of soil or 5 to 7.5 inches per 5-
foot soil profile) to 10w (0,6 to 0.08 in/in of soil or 3.5 to 5 inches per 5-
foot soil profile).

Soils in this group are in the Land Capability Subclass IIIe and IVe when
irrigated. Soil blowing is a major management problem,

The soils in this group comprises approximately 34% of the total acreage in
the area served by Mountain Home Reservoir

4) Soil Type IV - very deep, excessively drained and well drained sandy
and gravelly loamy soils, more than 10 inches deep over gravel with very
10w to 10w available water capacity. Permeability ranges from moderate
(0.6 to 2.0 in/hr) to rapid (6.0 to 20.0 in/hr) but is mostly rapid (2.0 to
6.0 In/hr). Available water capacity is very low (less than 0.06 In/in of
soil or less than 3.5 inches per 5-foot soil pronle) to low (0.06 to 0.08
in/In of soil or 3.5 to 5 inches per 5-foot soil profile).

Soils in this group are in the Land Capability Subclass IIIe and IVe when
irrigated. Soil blowlng is a major management problem,

The soils in this group comprises approximately 30% of the total acreage in
the area served by Mountain Home Reservoir

B. Service Area Map. Figure III-I is a map showing the approximate limits of
the area served by The Trinchera Irrigation Company. The areas shaded in blue
on the map highlights the area irrigated from all water sources in the district.
The area shown which is irrigated from Mountain Home Reservoir is generally that
area to the east of Smith Reservoir, More specifically the area shown which lies
below the Trinchera Canal, the Garland Canal, and the Highline Canal are
supplied from Mountain Home Reservoir. The remainder of the area served by the
company is from water rights in Smith Reservoir and the various creeks shown.

The total acreage irrigated by the Trinchera Irrigation Company Is approximateiy I
14,100 acres almost all of which can receive water from Mountain Home Reservoir
through a complex series of canals and ditches.

C. Land Use.

1. Present. There are approximately 15,000 acres that could be
served by The Trinchera Irrigation Company which could grow crops, of
which approximately 14,100 acres are presently in irrigated agricultural
use.

PD nr-2
Qlapter m - Ibmtain IbDe Rese1vuir

I
I
I
I
I
I
I'
I
I
I
I
I
I
I
I
I
I
I
I