Tiber Dam and its reservoir, Lake Elwell, are on the Marias River in north-central Montana. The dam and reservoir are features of the Lower Marias Unit of the Pick-Sloan Missouri Basin Project. The reservoir has 21,300 water surface acres, 21,244 land acres and 181 miles of shoreline. Major game fish include northern p
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 406-759-5077 · GPWebmaster@usbr.gov
Common questions
Quick Yes / No / Depends answers for Lake Elwell — 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 Lake Elwell?
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 Lake Elwell. Hand-launched craft usually need no permit; motorized boats may need registration or a launch fee.
Yes Can you camp at Lake Elwell?
Yes — camping is available. Reserve ahead where required; you can check availability on Recreation.gov.
Depends Can you have a campfire?
Sometimes — campfires are subject to seasonal fire restrictions and bans. Always check current fire conditions first.
Depends Is hunting allowed?
Yes — hunting is permitted here in season, with the required state license and tags. Check seasons and unit rules.
Depends Is there winter recreation?
Yes — snow and winter activities are available seasonally. Check conditions and closures before you head out.
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
User:David rugby16 / Public domain · Wikimedia Commons Bureau of Land Management Sweet Grass Hills
CheckThis Bureau of Land Management site may charge a fee your pass covers — confirm before you go.
Upper Missouri National Wild and Scenic River
CheckThis Bureau of Land Management site may charge a fee your pass covers — confirm before you go.
