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Wyoming Water Development Commission 
Harry C. LaBonde, Jr., PE, Director 
6920 Yellowtail Rd, Cheyenne, WY 82002 
Phone: 307-777-7626 

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107.PROJECT:Riverton Valley Rehabilitation No. 2-I
SPONSOR:Riverton Valley Irrigation District
LOCATION:Fremont County
Purpose Chapter Session Account Appropriation Due Date
Level II 86 2001 II $40,000   2002
Level III 88 2002 II $335,000* 2007
*50% grant

Flow measurements on the Riverton Valley Canal were conducted as part of the Wind River Basin study. The Riverton Valley open laterals experience high exfiltration as well as high maintenance costs. In 1994, the Commission recommended the project advance in the Rehabilitation Program to Level III status with an appropriation of $350,000. This project addressed twelve laterals under the main canal system. These open canals were replaced by buried pipelines, which greatly reduced maintenance costs and water losses. The district prioritized system repairs and work was completed in four phases from 1995 through the spring of 1999. The district was granted funds to purchase project materials. The district was responsible for all costs related to project design, permit procurement, land procurement, construction engineering and construction of the project. A total of 12 laterals were rehabilitated over a four-year period from 1995 to 1999. The district has realized a 25% increase in delivery efficiency with the improvements made to date.

The Riverton Valley Irrigation District, in an effort to continue their conservation program updated the WWDC Level I Report: Wind River Study: LeClair Canal and Riverton Valley (Wyoming No. 2 Canal Rehabilitation), March 1993,with the Level II Report: Riverton Valley Rehabilitation No. 2, Level II, October, 2001. The 2001 Level II Report recommended the installation of pipe in nine additional open laterals and provided a revised estimate for rehabilitation costs totaling $670,000. The 2002 Legislature appropriated $335,000 for 50% of the project costs to be used for the purchase of materials. Engineering, installation and permitting costs are provided by the district. Design and construction of two laterals, were completed during the fall of 2002.

No legislative action is required.

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