Dry Creek Debris Basin Rehabilitation

Project Description

The Natural Resources Conservation Service (NRCS) is analyzing alternatives to rehabilitate Dry Creek Debris Basin which is located within the cities of Lehi and Highland, Utah.  NRCS performed an assessment of Dry Creek Debris Basin in 2005.  The 2005 assessment concluded that the Dry Creek Debris Basin does not meet current NRCS and Utah State Dam Safety regulations and engineering standards for a Class “C” dam (potential “Loss of Life”).  The purpose of this project is to rehabilitate the dam to meet current NRCS and Utah State Dam Safety regulations, current engineering standards, and stabilize the existing dam structures.  The life of the dam would be extended for a minimum of 50 years and a maximum of 100 years.  The project would also restore the design storage capacity in the reservoir by possibly raising the height of the dam, removing sediment, enlarging the spillway to pass the Probable Maximum Flood, provide slope stability for seismic events, and as a result potentially increase the reservoir surface area.

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 (PL83-566).  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 debris basin is controlled by the North Utah County Water Conservancy District which is the project sponsor.

Current Status

The project is moving into the Draft Plan-EA phase and the public/agencies are invited to provide comments on the proposed project.

Public Comment Period

Open:   Thursday, January 22, 2015
Close:   Friday, February 20, 2015

Public Open House

Date:     Thursday, January 29, 2015
Time:    7:00 p.m. – 8:30 p.m.
Place:    Lehi Legacy Recreation Center
              123 N. Center Street
               Lehi, UT

Electronic and hard copies of the Draft Plan-EA will be available for review from January 22 - February 20, 2015. Download a copy here:

Draft Plan - EA (PDF, 63 MB)

or view a hard copy at:

Pleasant Grove Library-30 E. Center, Pleasant Grove, 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
125 S. State Street – Room 4010
Salt Lake City, UT 84138-1100

Project Documents

Utah Division of Water Rights Dam Safety – Dry Creek Website


Scoping Report (PDF, 2.14 MB)
Scoping Notice (PDF, 138 KB)
Scoping Project (PDF, 202 KB)
Scoping Public Meeting Presentation (PDF, 202 KB)

NOTE: We will add other directories as we move through the NEPA process.

Updated: January 28, 2015