Lima
Dam in Beaverhead County, Montana · Red Rock River · forms Lima Reservoir Upstream of Clark Canyon Reservoir
Height
56 ft
17 m (NID height)
Length
455 ft
139 m
Completed
1934
Lima Reservoir Upstream of Clark Canyon Reservoir today
6,567.35 ft
7 days ▲ 0.17 ft
Normal storage
75,180 acre-ft
Reservoir level measured Oct 21, 2026, 12:00 AM MDT. Full level page →
Facts
- Purposes
- Irrigation
- Dam type
- Earth
- Owner
- BEAVERHEAD COUNTY RED ROCK RIVER WATER/SEWER DIST. (Local Government)
- Maximum storage
- 133,000 acre-ft
- Surface area
- 5,900 acres
- Hydraulic height
- 54 ft
- Drainage area
- 570 sq mi
- Army Corps district
- Walla Walla District
- NID ID
- MT00905
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID MT00905 at nid.sec.usace.army.mil. Project website.