Grassy Lake which is formed by Grassy Lake Dam is a major feature on the Mindoka Project. This 1,477-acre reservoir is located near the Wyoming-Idaho border between Yellowstone and Grand Teton National Parks. Fish species include rainbow, cutthroat, and lake trout. Reservoir acre feet and total reservoir capacity and c
Maybe — confirm before you go.
Reclamation honors the pass at only a handful of sites — confirm before you rely on it here.
- Fee type Fee unknown — The fee structure here is unconfirmed.
- Source Find on Recreation.gov ↗
- Last verifiedJuly 6, 2026 · Check
- Official pagewww.recreation.gov ↗
- Contact 208-624-3151
Common questions
Quick Yes / No / Depends answers for Grassy Lake — always confirm with the managing site before you go.
Depends Does the America the Beautiful pass work here?
Maybe — Reclamation honors the pass at only a handful of sites — confirm before you rely on it here. Check with the managing agency before you go.
Yes Can you fish at Grassy Lake?
Yes — fishing is one of the listed activities here. You’ll need a valid state fishing license.
Yes Can you kayak, paddle, or boat here?
Yes — there’s water for boating and paddling at Grassy Lake. Hand-launched craft usually need no permit; motorized boats may need registration or a launch fee.
Yes Are there hiking trails?
Yes — trails here include 9c5 Campsite Spur Trail, Terraced Falls, Beula Lake Trail, and more. Check length and difficulty before you go.
Depends Is hunting allowed?
Yes — hunting is permitted here in season, with the required state license and tags. Check seasons and unit rules.
Yes Can you bring a dog?
Generally yes — dogs are welcome when kept under control (usually leashed). Confirm any local rules.
Depends Are drones allowed?
Sometimes — often allowed away from wilderness and developed or crowded areas, with rules. Check locally before you fly.
Nearby sites
NPS Photo / D. Lehle National Park Service Grand Teton National Park
ConfirmedYour pass covers the $35 park entrance fee.
NPS / Jacob W. Frank National Park Service Yellowstone National Park
ConfirmedYour pass covers the $35 park entrance fee.
