New Fork Lake Dam Project
New Fork Lake Irrigation District has proposed to rehabilitate the New Fork Lake Dam at current location to meet statewide safety requirements and increase water storage to improve the availability of water to downstream users. Modifications proposed to address the existing spillway safety inadequacies include: raising the dam embankment from 2.9 to 7.9 feet on the abutments to Elevation 7836.1, moving the bridge downstream to prevent flow obstruction, and removing the spillway bridge piers for one 60-foot wide spillway crest. The combination of increased water surface and weir length would enable the Potential Maximum Flood to be passed with 1 foot of residual freeboard. The proposed action would also provide additional storage for the New Fork Irrigation District. Recreation access to the area would be maintained on an existing detour route throughout the length of reconstruction project.
Project Summary
Location Summary:
New Fork Lake area east of Pinedale, WY.
Project Milestones:
| Milestone | Date |
|---|---|
| Scoping Start | 03/26/2020 |
| Comment Period | 03/26/2020 |
| Objection Period Start | 03/2025 (Estimated) |
| Decision | 05/2025 (Estimated) |
| Implementation | 05/2025 (Estimated) |
Expected Analysis Type:
Environmental Assessment
Special Authority:
Not Applicable / Other
Lead Management Unit:
Pinedale Ranger District
Notice and Comment Regulation:
218 (2013) Non-HFRA
Project Purpose:
Special Use Management
Project Activity:
Special Use Authorizations
Current Status:
On Hold
Forests:
Bridger-Teton National Forest
Districts:
Pinedale Ranger District
States:
Wyoming
Counties:
Sublette
Legal Land Description:
Not Applicable
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Kate Olsen
29 East Fremont Lake Rd.
Pinedale, WY 82941
541-820-3818
kate.h.olsen@usda.gov
Last Updated: 3/24/2025