Park Lake Dam Reconstruction will include removing all unacceptable material, stabilizing the foundation, and reconstructing the dam in-kind using a homogeneous embankment. Signed FANEC available at: https://usfs-public.box.com/s/trj8raeqy2vljp7vacggql
Location
Park Lake Dam is located in the Helena Ranger District of the Helena-Lewis and Clark National Forest, roughly 20 miles southwest of Helena, Montana, at latitude 46.444 and longitude -112.172 in Jefferson County, Montana.
Project timeline
1
NEPA Start Date
8/31/2025
2
Finding/Decision Date
3/13/2026
NEPA / regulatory detail
| Categorical Exclusion | USDA-44d-USFS |
| Decision Signed Date | 3/13/2026 |