NRCS-PL566 Watersheds

With funding from the NRCS-PL566, Sevier County and JDE worked to prevent flooding through the construction of a flood detention basin and a conveyance channel. Flood detention basins were located in Lind Canyon, Tank Canyon, and Wood Canyon. JDE performed hydraulic and hydrologic evaluations to prepare a conceptual layout, spillway, and other ancillary facilities.

After the Warner Draw Debris Basin did not meet NRCS and Utah State Dam regulations, plans were made to update the dam to meet the correct standards. The project consisted of rehabilitation of six debris basins within the Warner Draw Watershed. Rehabilitation of these debris basins reduced the risk of flood damages in the area. JDE’s technical review included the design report, specifications, drawings, supporting calculations, cost estimate, geologic and geotechnical analysis, hydraulic and hydrologic design data, quality assurance plan, and operation and maintenance plan.

JDE assisted the DWR in preparing a successful NRCS PL566 Watershed Plan application for the Olsen Reservoir - Lower Price River Watershed.  The project includes canal diversions and dump structures, an irrigation pipeline, channel improvements, increasing the storage of an irrigation reservoir via excavation of the reservoir area and raising the dam embankment, and an automated reservoir outlet to augment low flows throughout the lower Price watershed.  The benefits of the project include agriculture water during low flow period, wetlands, salinity reduction, fish and wildlife, habitat, and flood control.  JDE helped position the project for a successful application by soliciting project support from numerous project partners based on the broad benefits of the project.  JDE was also selected to complete the Watershed Plan which is now in process.