Lake levels
Ririe Reservoir, ID
- water level
- 5063.86 ft
- Condition
- Low for this time of year
- 7-day change
- -0.51 ft
- 30-day change
- -13.85 ft
- 1-year change
- -25.22 ft
Reading as of 2026-09-30 | the U.S. Bureau of Reclamation
- Since yesterday
- -0.08 ft
- 7-day change
- -0.51 ft
- 30-day change
- -13.85 ft
- 1-year change
- -25.22 ft
- Record high
- 5113.15 ft
In brief
Ririe Reservoir stood at 5,063.86 feet on Sep 30, 2026. That is lower than 100% of September readings since 2022.
Source: U.S. Bureau of Reclamation
Lake level timeline
Records and averages
| Current level | 5063.86 ft |
|---|---|
| Record high | 5113.15 ft (2024-04-30) |
| Record low | 5063.86 ft (2026-09-30) |
| Average of all readings | 5093.96 ft |
| Data span | 4 years (2,000 readings) |
Level schematic
Trout stocking on Ririe Reservoir
IDFG stocked Ririe Reservoir 3 times in 2026, 199,259 fish in total. Kokanee and Rainbow Trout - Triploid and Tiger Trout at Fingerling (3-6 inches) and Catchable (12-14 inches). IDFG's published figures for 2026, the most recent season it has confirmed, record 20,223 trout actually released here across 3 visits.
| Species | Fish | When |
|---|---|---|
| Kokanee | 179,036 | May 2026 |
| Rainbow Trout - Triploid | 18,067 | May 2026 |
| Tiger Trout | 2,156 | May 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 Ririe Reservoir full right now?
As of 2026-09-30, Ririe Reservoir sits at 5063.86 ft, which is low for this time of year. Over the past 30 days the level has fallen 13.85 ft.
What is the water level at Ririe Reservoir today?
The most recent reading at Ririe Reservoir is 5063.86 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 Ririe Reservoir has ever been?
The highest level for Ririe Reservoir in our records is 5113.15 ft on 2024-04-30. The lowest is 5063.86 ft on 2026-09-30. Our record covers about 4 years of readings.
Is Ririe Reservoir low for this time of year?
Compared with every September in our records, the current level is higher than 0% 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 Ririe Reservoir low 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. Ririe Reservoir has fallen 13.85 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 Ririe Reservoir changed over the past year?
Ririe Reservoir is -25.22 ft compared with this date last year (5063.86 ft today). The full-history chart above covers 4 years, with a record high of 5113.15 ft and a record low of 5063.86 ft.
Download and cite
Quote this reading
Ririe Reservoir stood at 5,063.86 feet on Sep 30, 2026. That is lower than 100% of September readings since 2022.
Download the full record
ririe-reservoir-id-water-level-history.csv
How to cite
MyWaterLevel, “Ririe Reservoir water level, 2022 to 2026,” data from U.S. Bureau of Reclamation, https://mywaterlevel.com/lake/id/ririe-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.