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2002 LEGISLATIVE REPORT
Active Projects
103. | PROJECT: | Riverton Valley Rehabilitation #2, Phase II | | | | | |
| LEVEL: | II |
| SPONSOR: | Riverton Valley Irrigation District |
| LOCATION: | Fremont County |
| PROGRAM: | Rehabilitation |
PROJECT INFORMATION:
The Riverton Valley Irrigation District has been rehabilitating laterals to continue their conservation
program as recommended in the WWDC Level I Report: Wind River Study: Leclair Canal and
Riverton Valley (Wyoming No. 2 Canal Rehabilitation), March 1993. Most recently, a WWDC
Level II study was just completed (Oct. 2001) which provided cost estimates and conceptual designs
for piping the remaining laterals. The district is realizing a 25% increase in efficiency through such
improvements.
The district has approached the Commission for continuation of the existing Level II to evaluate the
rehabilitation needs and costs of four underflow structures that were not included in the previous
Level I study. These 1930's vintage structures handle upstream return flow and flood flow and
protect the canal from flood related erosion. The four crossings are in various states of disrepair,
with Madden Draw being in the worst condition, as the underflow structure has already partially
failed (caved in). Additionally, the corrugated metal pipe utilized at these crossings may not be sized
correctly to handle extreme events. Rehabilitation of these crossings would provide protection to the
canal during flood flows and ultimately improve the ability and reliability of the system to deliver
water to the users.
RECOMMENDED LEGISLATIVE ACTION:
The WWDC recommends that the project be incorporated in the Rehabilitation Program at Level II
with an appropriation of $40,000.
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