Wellsville-Mendon Plan-EA


Sponsor: Cache Water District

Co-sponsors: Cache County, Wellsville Irrigation Company, Wellsville City, Mendon City, and Wellsville-Mendon Conservation District
Page updated: August 20, 2021 — This page will continue to be updated as the project progresses.


Project Description

The United States Department of Agriculture Natural Resources Conservation Service (USDA-NRCS), with assistance from Cache Water District as the project sponsor, and several co-sponsors including Cache County, Wellsville Irrigation Company, Wellsville City, Mendon City, and Wellsville Mendon Conservation District, are considering proposed improvements within the Wellsville Canyon and Threemile Creek Watersheds, Cache County, UT.

The proposed project would prevent or reduce flooding, enhance wildlife habitat, and improve irrigation water delivery. Conceptual improvements may include:

  1. Flood Prevention
    • Culvert replacements
    • Channel stabilization measures
    • Detention basins
  2. Agricultural Water Management
    • Pressurized secondary irrigation system to improve reliable irrigation water supply and provide sustainable conveyance system
    • Diversion structures
  3. Recreation
    • Opportunities at Wellsville Reservoir


Project Location

To view a map of the project watershed area, click here.


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 Council on Environmental Quality’s regulations at 40 CFR Parts 1500-1508 and the Natural Resources Conservation Service Regulations (7 CFR Part 650), which require an evaluation of potential environmental impacts associated with federal projects and actions.


Current Status

The scoping phase is complete. The project is currently in the alternative development and analysis phase.


Project Schedule
  • Scoping Public Comment Period :: April 27, 2021 — May 27, 2021

You can click here to view the Scoping Report. (The page may take a few minutes to load due to the large file size of the report. We recommend using the Google Chrome browser. Thank you for your patience!)

  • Scoping Public Virtual Open House :: May 11, 2021

You can click here to see the meeting flyer, presentation, and a recording of the meeting.

  • Alternative Development and Analysis :: Summer 2021 — Winter 2021
  • Preparation of Draft Watershed Plan – Environmental Assessment (Draft Plan-EA) :: Winter 2021 — Spring 2022
  • Draft Plan-EA Public Comment Period (30 days) :: Fall 2022
  • Preparation of Draft Plan-EA & Finding of No Significant Impact (Plan-EA and FONSI) :: Winter 2022 — Spring 2023
  • Issue of Finding of No Significant Impact (FONSI) :: Spring 2023


Contact Information

Chad Brown — Franson Civil Engineers
115 Golf Course Rd, Suite D
Logan, UT 84321
[email protected]

Jonathan Bingham – USDA-NRCS
2871 South Commerce Way
Ogden, UT 84401
[email protected]

Anthony Beals – USDA-NRCS
125 South State Street Room 4010
Salt Lake City, UT 84138
[email protected]

Derek Hamilton – USDA-NRCS
125 South State Street Room 4010
Salt Lake City, UT 84138
[email protected]