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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I. Repairing the deteriarated concrete;
2. Reconditioning the steel radial gates in the canal regulator;
3. Reconditioning the timber slide gate;
4. Installing electric drum hoists on the canal regulator;
5. Repairing or replacing defective handrailing and installing new handrailing as
required;
6. Installing galvanized steel grating over the gate bays in the canal regulator.
The total cost to rehabilitate this structure is estimated to be $100,200, as shown in
Table B-2.

Waste ways I and 2, Fort Lyon Canal. Wasteway Nos. I and 2 are located
approximately 0.5 mile and 2.5 miles, respectively, downstream from the lower diversion
dam (see Figure 4). Their primary purpOlSe is to remove sediment (sluice) from the canal;
however, they might also be used to release excess flows from the canal. Wasteway
No. I consists of seven concrete pipes controlled by hydraulically-operated sluice gates,
and hos curved concrete silt vanes on the canal floor (see Photograph 3). Wasteway No.2
has eight bays, each operated with manual, handwheel-type hoists (see Photograph 4).

Wasteway No. I is In rather poor condition as there is widespread deterioration of
the concrete, and the end bay on the upstream side of the structure is fully silted in and
inoperable. It appears that the wasteway channel could be shortened, due to the
meandering of the Arkansas River, to provide more efficient sediment transport. The
proposed reoch of the channel would be about 500 feet long, with a 20-foot bottom width,
2: I side slopes, and an average total depth of 6 feet. It would have an average slope of
1.7 percent, providing 0 capocity of 700 cfs with over two feet of freeboard. The reach
was designed to carry the combined maximum capocity of the seven conduits in the
wasteway structure. There has been considerable discussion regarding the effectiveness
of the silt vanes, particularly concerning the desirability of a cover over the vanes. A
more thorough investigation of the operation and potential effectiveness of these vanes
should be pursued as a part of the rehabilitation of th is structure. Also, the present
spocing of the bars in the trashrack is too wide and should be reduced by adding new bars.

Wasteway No.2 is in good condition, as the sluice gates have been recently
reconditioned, and there are no other apparent structural or mechanical problems.
However, a 10-foot steel Parshall flume is propOlSed for the wasteway channel. This will
allow measurement of the water being released from the wasteway so that the Canal
Company can claim credit for this water at the headgates.

Specifically, rehabilitation of these structures will involve the following work:

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