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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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 63. PROJECT:Jon's Drop/4-Mile Flume Rehabilitation Project
SPONSOR:West Side Canal Company/Savery-Little Snake Conservancy Dist.
LOCATION:Carbon County
Purpose Chapter Session Account Appropriation Due Date
Level II 7 2002 II $25,000 2002

The West Side Canal Company requested a Level II feasibility study to provide recommendations and cost estimates for rehabilitation of the Jons Drop and the 4-mile flume within the canal system. The Jons Drop is a chronic maintenance problem on the canal and is currently experiencing bank failure that may, if allowed to continue, disrupt water flow to irrigators below the drop. The 4-mile flume has reached its useful life expectancy and is in need of overhaul or replacement.

It was recommended that Jons Drop be rehabilitated by installing a HDPE pipe drop with a riprap energy dissipation pool. This drop will direct the flow away from the erosion area and to an area where flow can be controlled. It is recommended that 4-mile flume be replaced with an inverted siphon pipe.

The WWDC recommends the project be incorporated in the Rehabilitation Program and advanced to Level III construction with a proposed budget of $142,000. The appropriation will be 50% loan and 50% grant. The loan will be at 6% interest for a term of 20 years.

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