Lake levels
Mann Creek Reservoir, ID
- water level
- 2825.74 ft
- Condition
- Low for this time of year
- 7-day change
- -0.07 ft
- 30-day change
- -4.03 ft
- 1-year change
- -2.94 ft
Reading as of 2026-09-30 | the U.S. Bureau of Reclamation
- Since yesterday
- +0.01 ft
- 7-day change
- -0.07 ft
- 30-day change
- -4.03 ft
- 1-year change
- -2.94 ft
- Record high
- 2888.96 ft
In brief
Mann Creek Reservoir stood at 2,825.74 feet on Sep 30, 2026. That is lower than 94% of September readings since 2022.
Source: U.S. Bureau of Reclamation
Lake level timeline
Records and averages
| Current level | 2825.74 ft |
|---|---|
| Record high | 2888.96 ft (2024-04-23) |
| Record low | 2825.29 ft (2024-10-12) |
| Average of all readings | 2855.58 ft |
| Data span | 4 years (2,000 readings) |
Level schematic
Trout stocking on Mann Creek Reservoir
IDFG stocked Mann Creek Reservoir 2 times in 2026, 4,884 fish in total. Rainbow Trout - Triploid at Catchable (12-14 inches). IDFG's published figures for 2026, the most recent season it has confirmed, record 4,884 trout actually released here across 2 visits.
| Species | Fish | When |
|---|---|---|
| Rainbow Trout - Triploid | 2,448 | April 2026 |
| Rainbow Trout - Triploid | 2,436 | April 2026 |
IDFG lists a week or a month rather than a date, and counts fish as an estimate. Full Idaho stocking schedule →
Frequently asked questions
Is Mann Creek Reservoir full right now?
As of 2026-09-30, Mann Creek Reservoir sits at 2825.74 ft, which is low for this time of year. Over the past 30 days the level has fallen 4.03 ft.
What is the water level at Mann Creek Reservoir today?
The most recent reading at Mann Creek Reservoir is 2825.74 ft (2026-09-30), sourced from the U.S. Bureau of Reclamation. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Mann Creek Reservoir has ever been?
The highest level for Mann Creek Reservoir in our records is 2888.96 ft on 2024-04-23. The lowest is 2825.29 ft on 2024-10-12. Our record covers about 4 years of readings.
Is Mann Creek Reservoir low for this time of year?
Compared with every September in our records, the current level is higher than 6% of them, which we classify as low 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.
Why is Mann Creek Reservoir changing right now?
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. Mann Creek Reservoir has fallen 4.03 ft over the past 30 days. For the operational reason on any given week, check the U.S. Bureau of Reclamation directly.
How much has Mann Creek Reservoir changed over the past year?
Mann Creek Reservoir is -2.94 ft compared with this date last year (2825.74 ft today). The full-history chart above covers 4 years, with a record high of 2888.96 ft and a record low of 2825.29 ft.
Download and cite
Quote this reading
Mann Creek Reservoir stood at 2,825.74 feet on Sep 30, 2026. That is lower than 94% of September readings since 2022.
Download the full record
mann-creek-reservoir-id-water-level-history.csv
How to cite
MyWaterLevel, “Mann Creek Reservoir water level, 2022 to 2026,” data from U.S. Bureau of Reclamation, https://mywaterlevel.com/lake/id/mann-creek-reservoir/, accessed Oct 13, 2026.
Source: the U.S. Bureau of Reclamation. All Idaho lake levels. Readings are provisional and may be revised. About our data and methods.