Decision Memo Completed

East Tensleep Fish Barrier and Chemical Treatment

Bighorn National Forest Big Horn; Johnson, Wyoming Powder River Ranger District

Construct a steel reinforced concrete fish barrier to prevent non-native trout movement upstream. Allow the state to chemically treat approximately 18 miles of stream and lake habitat post construction.

Location

Lat: 44.181472 Long: -107.217584

Project timeline

1
Scoping Start
08/03/2023
2
Decision
03/2025 (Estimated)
3
Implementation
07/2026 (Estimated)

NEPA / regulatory detail

Categorical Exclusion32.12 (8), 36 Cfr 220.6(D)(8); 32.2 (6), 36 Cfr 220.6(E)(6)
Special AuthorityNot Applicable / Other
Notice and Comment RegulationNot Subject to Regulations
Project ActivitySpecies Habitat Improvements; Species Population Enhancements; Watershed Improvements; Wilderness Management
East Tensleep Fish Barrier and Chemical TreatmentDecision Signed Date: 03/17/2025
ForestsBighorn National Forest
DistrictsPowder River Ranger District
Legal Land DescriptionT49N.R86W.SEC33NWNW.
Recreation managementWildlife, fish, rare plantsWatershed managementProjects that may affect wilderness (for mailing list contacts)