Built in 1909, Laprele Dam Is a Slab and Buttress-Type Dam That Was Constructed by the Ambursen Hydraulic…

Description

Built in 1909, Laprele Dam Is a Slab and Buttress-Type Dam That Was Constructed by the Ambursen Hydraulic Construction Company in Converse County, Wyoming on Laprele Creek. The Dam Is Located About 11 Miles West of Douglas, Wyoming. IT Was Constructed to Store Up to 20,000 Acre-Feet of Spring Snowmelt Freshet Flows for Downstream Irrigation During the Summer. The Existing Dam Has Deteriorated Considerably Since Construction and Was Deemed Unsafe for Full Storage by the Wyoming Water Development Office Following Recent Extensive Structural Inspection and Foundation Evaluation, Resulting in a Maximum Pool Elevation Restriction. Multiple Alternatives for Rehabilitating or Replacing the Existing Dam Have Been Considered and Evaluated at a Preliminary Level. The Preferred Alternative, Now Advanced to 30 Percent Design, Was Replacement of the Existing Dam with a New Roller-Compacted Concrete (Rcc) Dam with Its Central Axis About 300 Feet Downstream from the Existing Dam Crest. The Objective of This Agreement Is to Perform Engineering and Construction Activities to Build a New Dam That Will Be Founded on Bedrock and Raised to the Same Maximum Normal Operating Elevation as the Existing Dam. WDC Anticipates a 4-YEAR Construction Schedule from March 2025 to December 2029.