Clark Canyon Dam
Dam in Beaverhead County, Montana · Beaverhead River · forms Clark Canyon Reservoir
Height
148 ft
45 m (NID height)
Length
2,950 ft
899 m
Completed
1964
Clark Canyon Reservoir today
5,517.55 ft
7 days ▲ 0.83 ft
vs full pool
▼ 28.55 ft
Normal storage
178,062 acre-ft
Below normal for the date
Reservoir level measured Oct 23, 2026, 1:00 PM MDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation
- Dam type
- Earth
- Structural height
- 148 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 328,979 acre-ft
- Surface area
- 6,606 acres
- Hydraulic height
- 132 ft
- Drainage area
- 2,321 sq mi
- Spillway
- Uncontrolled, 70 ft wide
- Army Corps district
- Walla Walla District
- Also known as
- Clark Canyon Reservoir
- NID ID
- MT00569
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 22, 2025. Search NID ID MT00569 at nid.sec.usace.army.mil. Project website.