Fishing Swimming Boating
Before you fish
Fishing rules, water conditions, and access change without notice. State fish-and-game agencies update regulations annually — sometimes mid-season for emergency closures. Real-time flow, water temperature, and stocking data are pulled from USGS, NOAA, and state agencies on a delay. The Outdoors App is not the regulating authority. Confirm current regulations with the state agency, check flow on the USGS gauge, and verify access if a section flows through private land. You are responsible for compliance.
- Depth from:
- State DNR survey
About
Henrys Lake is a high-elevation alpine lake in eastern Idaho near the Montana border, just outside Yellowstone NP. Despite its modest 8 m (26 ft) max depth and ~6,500 acre size, it is one of the premier trophy cutthroat-trout fisheries in the U.S. — the lake's rich freshwater-shrimp (gammarus) population produces unusually large fish. Yellowstone cutthroat, brook trout, and Henrys Lake hybrid trout (cutthroat × rainbow) all reach trophy sizes. Idaho DFG manages with strict catch-and-release on cutthroat in much of the lake during the spring spawn. 2-pole permit + Idaho fishing license required.
Reviews
No reviews yet
Be the first to share your experience and help others plan their visit.