Public Notice of Availability

The U.S. Department of Agriculture’s Natural Resources Conservation Service (NRCS), in coordination with Washington County, announce the availability of the Final Watershed Plan and Environmental Assessment (Plan-EA) for the Santa Clara Watershed Project (Project) in Washington County, Utah. This Project is partially funded through the Watershed Protection and Flood Prevention Act (Public Law [PL] 83-566).

Project Description

The Project includes the construction of stream diversions and repair/construction of detention basins within Dammeron and Diamond Valleys, as well as channel armoring and irrigation pipeline installation within the Shivwits Band of Paiutes land. These improvements will provide flood management, address agricultural water demands, and provide erosion protection within the watershed. 
NEPA Analysis

NRCS, as the lead federal agency, has prepared a Final Plan-EA that analyzes potential Project impacts to the natural and human environment, in accordance with the National Environmental Policy Act (NEPA). The Final Plan-EA also integrates analysis following the Principles, Requirements and Guidelines for Water and Land Related Resources Implementation Studies and Federal Water Resource Investments (PR&G, 2018). The Draft Plan-EA was reviewed by NRCS-Utah, the National Water Management Center, and NRCS-National Headquarters. The Draft Plan-EA was available for public comment between June 11, 2025, and July 13, 2025.

Current Status

The NRCS has prepared a Final Plan-EA has and issued a Finding of No Significant Impact (FONSI) for the Project. The Final Plan-EA and FONSI can be downloaded from the Project Documents section below.

Project Documents 

Final Plan-EA 
Final Appendix A 
Final Appendix B 
Final Appendix C 
Final Appendix D
Final Appendix E
FONSI

Contact Information

Ammon Boswell, Watershed Program Manager
1950 West Main Street, Tremonton, UT 84337
ammon.boswell@usda.gov

Updated: September 2026