MontanaReservoir, 4,925 acres, Beaverhead County
Clark Canyon Reservoir water level
Current level
5,518.00ft above sea level
Reading from Oct 26, 2026
Well below normal for October
- Past 24 hours
- +0.12ft
- Past 7 days
- +0.98ft
- Past 30 days
- +2.90ft
- vs typical October
- -6.84ft
Clark Canyon Reservoir was at 5,518.00 ft on October 26, rising 0.98 ft over the past week. That is well below normal for October: the typical October level is 5,524.84 ft, so the lake is 6.84 ft below its usual mark.
Last 30 days
Shaded band shows the lowest and highest October monthly averages on record. Dashed line is the typical October level.
Typical level through the year
Each bar spans the range of monthly averages on record for that month. The line marks the median. The orange dot is where the lake sits now.
Recent daily readings
| Date | Level (ft above sea level) | Change |
|---|---|---|
| Oct 26, 2026 | 5,517.98 | +0.10 |
| Oct 25, 2026 | 5,517.88 | +0.15 |
| Oct 24, 2026 | 5,517.73 | +0.26 |
| Oct 23, 2026 | 5,517.47 | +0.13 |
| Oct 22, 2026 | 5,517.34 | +0.11 |
| Oct 21, 2026 | 5,517.23 | +0.11 |
| Oct 20, 2026 | 5,517.12 | +0.10 |
| Oct 19, 2026 | 5,517.02 | +0.11 |
| Oct 18, 2026 | 5,516.91 | +0.11 |
| Oct 17, 2026 | 5,516.80 | +0.12 |
| Oct 16, 2026 | 5,516.68 | +0.11 |
| Oct 15, 2026 | 5,516.57 | +0.11 |
| Oct 14, 2026 | 5,516.46 | +0.10 |
| Oct 13, 2026 | 5,516.36 | +0.12 |
Reading these numbers
Readings are reservoir surface elevations in feet, as published by the U.S. Army Corps of Engineers. Compare them with ramp and dock elevations from the lake operator to judge whether a launch is usable.
On a reservoir, a few feet of drop changes the shoreline more than you would think. Low water exposes stumps, sandbars and old roadbeds that are normally well under the hull, and some ramps end before the water does.
High water brings its own problems: floating debris after storms, flooded docks and courtesy piers, and no-wake rules near flooded campgrounds. A quick look at the trend before you hitch up saves a wasted trip.
The gauge is about 2 miles from the center of the lake and is listed by USACE as Clark Canyon Dam & Reservoir. Wind can pile water up at one end of a big lake for a few hours, so short spikes on a windy day are normal.
Clark Canyon Reservoir water level questions
What is the water level at Clark Canyon Reservoir today?
Clark Canyon Reservoir was at 5,518.00 ft on October 26, rising 0.98 ft over the past week. That is well below normal for October: the typical October level is 5,524.84 ft, so the lake is 6.84 ft below its usual mark.
Is Clark Canyon Reservoir high or low right now?
Compared with the long-term record for October, the lake is well below normal. The October monthly average has ranged from 5,515.05 to 5,540.97 ft, with a typical value of 5,524.84 ft.
Is Clark Canyon Reservoir rising or falling?
Over the last seven days the level has risen (+0.98 ft), and it is +2.90 ft compared with 30 days ago.
Where does the Clark Canyon Reservoir water level data come from?
From the U.S. Army Corps of Engineers reading at Clark Canyon Dam & Reservoir. The Corps reports pool elevation, usually every hour, and early values can be revised after review.
How often is this page updated?
The page itself is rebuilt every day with the latest daily values, and the current reading refreshes straight from the Corps of Engineers each time you open it.
Nearby lakes
If Clark Canyon is blown out, these are the closest alternatives. Tap through for their water levels.