PROJ00005

• Contract/PO #: C153402
• Contractor Name: Fort Lyon Canal Company
• Water District: 0
• County: Bent
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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water regularly exists in the reservoir. The estimated cost for the pumping plant and
pipeline is $142,900, as shown in Table B-7. It is presently anticipated that the pumping
plant will operate about 60 days per year for 24 hours per day, to supplement irrigation
water in the canal when the lower divisions are being served. Operation would probably
be for 2 to 3 days at a time, the length of individual irrigation runs, throughout the
irrigation season.

Construction of the pumping plant is recommended for several reasons. First, the
pumping plant and reservoir would provide supplemental water for irrigation in the
Lamar Division. This would augment the water presently available from other sources
(such as Puebla Reservoir). At the proposed operatian level of the pumping plant, it
would provide about 900 acre-feet of irrigation woter annually, with operation and
maintenance costs, including power costs of roughly $5,400 per year, and annual
amartized costs for capital improvements of $12,700 per year. This compares with
purchasing an equivalent I amount of water at about $20.00 per acre-foot, or $18,000 per
year. Second, the ability to transfer water from the reservoir back into the canal would
make the reservoir useful for regulating flows in the lower portions of the canal,
providing more stable and efficient operation of the canal.

The reservoir inlet structure is a single-bay concrete structure (see Photograph II)
and is in relatively poor condition with widespread, but moderate, concrete damage, and
general disrepair of the steel radial gate and hoist. Power operation of this gate appears
justifiable due to its critical nature and could be provided with a portable power unit.
This would require replacement of the existing hoist with a drum-type hoist compatible
with the portable power unit.

The rehabilitation of the inlet structure would consist of the following:
I. Repairing the deteriorated concrete;
2. Reconditioning the steel radial gate;
3. Replacing the existing hoist with a drum-type hoist.

In order to comply with the State Engineer's recommendations regarding the
construction of an emergency spillway, and to provide additional storage capacity in
Thurston Reservair, it is proposed that the crest of the dam be raised three feet to an
approximate elevation of 3806. This would provide about 840 acre-feet of additionol
capac ity in the reservoir.

I In order to provide 900 acre-feet of irrigation water ot the Lamar Division, the
Canal Company must divert 1,500 acre-feet at the Fort Lyon Canal headgate.

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