Tibble Fork Dam Rehabilitation

 Project Description

The Natural Resources Conservation Service (NRCS) is analyzing alternatives to rehabilitate Tibble Fork Dam located on United States Forest Service Uinta-Wasatch-Cache National Forest property. NRCS performed an assessment of Tibble Fork Dam in 2004. The 2004 assessment concluded that Tibble Fork Dam does not meet current NRCS and Utah State Dam Safety regulations and engineering standards for a high hazard dam (potential “Loss of Life”). The purpose and need of this project is for Tibble Fork Dam to meet current USDA-NRCS and Utah State Dam Safety regulations and current engineering standards. It would also continue to provide current benefits for the primary authorized purposes of flood prevention and sediment retention with secondary benefits of recreation and irrigation water storage.  Stabilizing the existing dam structures would address the risk of loss-of-life and flooding associated with a dam failure because the dam is not meeting current safety criteria.

NEPA Analysis

This project is being partially funded by the NRCS Small Watershed Rehabilitation Amendments (PL 106-472) which authorizes funding and technical assistance to rehabilitate aging flood control dams built under the Small Watershed Program (PL 83-566). NRCS, as the lead federal agency, is initiating NEPA analysis in the form of a Supplemental Watershed Plan and Environmental Assessment to analyze impacts to the natural and human environment from this project. The Environmental Assessment will comply with the Council on Environmental Quality’s regulations at 40 CFR Parts 1500-1508 which require an evaluation of potential environmental impacts associated with federal projects and actions. This project is located within the boundary of the Uinta-Wasatch-Cache National Forest and the United States Forest Service is a cooperating agency.

Current Status

The NRCS has prepared a Draft Supplemental Watershed Plan-Environmental Assessment (Draft Plan-EA) describing the proposed rehabilitation of the Tibble Fork Dam.  The Plan-EA presents the alternatives analyzed, potential impacts to the environment, and the Preferred Alternative for the project. The public is invited to comment on the Draft Plan-EA during the specified time period below and attend a Draft Plan-EA public open house.

Draft Plan-EA Public Comment Period

Open:      Thursday, July 24, 2014
Close:      Friday, August 22, 2014

Draft Plan-EA Public Open House

Date:           Thursday, July 31, 2014
Time:           6:00 p.m. – 8:00 p.m. (MST)
Location:     Pleasant Grove Recreation Center
                   Multi-Purpose Room
                   547 South Locust Avenue
                   Pleasant Grove, Utah    

Electronic and hard copies of the Draft Plan-EA will be available for review from July 24 - August 22, 2014 at:


Alpine City Hall  -  20 North Main, Alpine, UT

Contact Information

For further project information please contact:

Greg Allington – McMillen, LLC
1401 Shoreline Drive
Boise, ID  83702
208.342.4214 phone
208.342.4216 fax


Norm Evenstad - NRCS
Wallace F. Bennett Federal Building
125 S. State Street – Room 4010
Salt Lake City, UT 84138-1100
Phone: 801-524-4569
Fax: 801-524-4403

Project Documents

Draft Plan - EA

Tibble Fork Draft Plan EA Total Report (PDF, 114 MB)
Tibble Fork Draft Plan EA Report (PDF, 1.73 MB)
Tibble Fork Draft Plan EA Appendix A (PDF, 576 KB)
Tibble Fork Draft Plan EA Appendix B (PDF, 16.2 MB)
Tibble Fork Draft Plan EA Appendix C (PDF, 13.3 MB)
Tibble Fork Draft Plan EA Appendix D (PDF, 9.05 MB)
Tibble Fork Draft Plan EA Appendix E (PDF, 74 MB)

Other Documents


NOTE: NRCS will add other directories and documents as we move through subsequent phases of the NEPA process.