Clark Canyon Reservoir, MT

As of 2026-10-12, Clark Canyon Reservoir sits at 5516.34 ft, which is below average for this time of year. Over the past 30 days the level has risen 2.22 ft.

The most recent reading at Clark Canyon Reservoir is 5516.34 ft (2026-10-12), sourced from the U.S. Bureau of Reclamation. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Clark Canyon Reservoir in our records is 5546.33 ft on 2024-04-10. The lowest is 5511.98 ft on 2022-09-05. Our record covers about 5 years of readings.

Compared with every October in our records, the current level is higher than 31% of them, which we classify as below average for this time of year. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.

Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Clark Canyon Reservoir has risen 2.22 ft over the past 30 days. For the operational reason on any given week, check the U.S. Bureau of Reclamation directly.

Clark Canyon Reservoir is -0.25 ft compared with this date last year (5516.34 ft today). The full-history chart above covers 5 years, with a record high of 5546.33 ft and a record low of 5511.98 ft.