Project Description

The U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS), with assistance from the Town of Kanosh Corn Creek Irrigation Company (CCIC), and the Kanosh Band of Paiute Indians, announce the availability of the Final Watershed Plan and Environmental Assessment (Plan-EA) for the Corn Creek Watershed and Flood Prevention Project in Millard County, Utah. The Project proposes the following improvements to flood prevention and agricultural water management: 

• Corn Creek Dam & Debris Basin: The current debris basin would be removed and a new dam & debris basin constructed downstream that would have an updated alignment slightly farther downstream and a taller embankment.
• Primary, Secondary, Emergency & Auxiliary Spillways: Construction of four new spillways would replace the existing structures, which do not meet current standards.
• Pipe Network/Secondary System: A gravity pipe system to reduce seepage and evaporation losses would be constructed for the CCIC & Kanosh Band.
• Berm & Channel Modification: Installation of channel improvements & other flood control infrastructure to prevent flood damages in Kanosh.
• Pond Relocation & Kanosh Band Secondary System: As part of construction, the Town Secondary Pond would need to be replaced. As a cost saving measure, the Town and Tribe ponds will be combined.

NEPA Analysis

NRCS, as the lead federal agency, is initiating National Environmental Policy Act (NEPA) analysis in the form of a Watershed Plan and Environmental Assessment (Plan-EA) to analyze impacts to the natural and human environment from this Project. The Plan-EA will comply with the USDA’s NEPA regulations at 7 CFR Part 1b and NRCS’s NEPA regulations at 7 CFR Part 650, which require an evaluation of potential environmental impacts associated with federal projects and actions.

Current Status

A Public Meeting for the Draft-EA was held on April 22, 2025. The public comment period occurred from April 22, 2025, to June 23, 2025. 

On January 16, 2026, the U.S. Department of Agriculture Natural Resources Conservation Service (NRCS) issued the Finding of No Significant Impact (FONSI) for the Final Watershed Plan and Environmental Assessment (Plan-EA). See below for the Final Plan-EA and FONSI.

The project is moving into the design phase, pending funding availability. Phased construction could begin as early as Spring 2027.

Contact Information

Ammon Boswell
Watershed Programs Manager, NRCS Utah
ammon.boswell@usda.gov
435-459-1621   

Updated: February 2026