PROJC01820 ‎(2)‎

• Contract/PO #: C150189
• Contractor Name: Larimer and Weld Irrigation Company, The
• Contract Type: Loan
• Water District: 2
• County: Weld
• Loan Projects - Doc Type: Feasibility Study

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

TABLE 1
STRUCTURE SUl\1MARY

Structure Name Location Gate Gate
Width Height
.
Finley Check NE 1/4, Sec 34, T7N, R67W 25' 7'
Lake Lee Dam NW 1/4, Sec 29, T7N, R67W 17' 6'
Big Windsor Inlet NW 1/4, Sec 28, T7N, R67W 6' 6'
Big Windsor Check NW 1/4, Sec 28, T7N, R67W 25' 6'

The Finley Check is similar to the other twelve check structures that have been replaced by the
Company. This structure is located just downstream of Big Windsor Reservoir and is necessary
to' deliver water to share holders south of the ditch below Big Windsor. The existing structure is
shown in photographs 1 and 2 in Appendix A of this report. This structure has no means to apply
stop logs or other measures to temporarily check the ditch and is undermined at the base slab and
on the left side walls. This structure would require major repairs and renovation to make it a
useful structure. The location of the check is shown on Figure Bl in Appendix B.

The Lake Lee Dam impounds Lake Lee, as shown on Figure Bl in Appendix B, and is necessary
to control flows in the ditch. This is the main regulating structure on the ditch with Lake Lee
acting as an equalizer for the ditch. The Lake Lee Dam is a concrete structure approximately 60
feet in width, 60 feet in length and 15 feet in height. The existing structure is shown in
photographs 3 and 4 in Appendix A. The structure has two 16 foot radial gates and has a bridge
over the structure which carries the canal maintenance road and allows access to the gate operators
and the ditch riders residence. The structure concrete is deteriorated with the base slab being in
poor condition, the wall to slab jointbeing compromised with large chunk:s missing from erosion
and freeze thaw action, and the slab is undermined in some areas. The radial gates and their sills
are in poor condition and require regular maintenance to sustain operations.

Big Windsor Inlet is a diversion and conveyance structure that allows all or a portion of the flow
in the ditch to be checked and diverted into Big Windsor Reservoir which impounds over 17,000
acre feet of water. The existing structure is approximately 250 feet in length, 50 feet in width,
and consists of a inlet and drop structure with four 8 foot gates to divert water into Big Windsor.
The existing structure is shown in photographs 5 and 6 in Appendix A.

The structure, in conjunction with a check in the ditch, diverts the water and drops it
approximately 50 feet in elevation into the reservoir. The check structure associated with the inlet
has significant deterioration of the concrete, is undermined, no longer has functioning stoplog
guides, and is difficult to use as a check. The inlet structure and gates are in fair condition but
the flume, drop structure, and outlet portions of the structure are in a very deteriorated condition.

Larimer & Weld Feasibility Study
Lake Lee & Big Windsor - 03.043

Page 6