Lake levels
Upper Stillwater Reservoir, UT
- water level
- 8097.51 ft
- Condition
- Low for this time of year
- 7-day change
- -4.97 ft
- 30-day change
- -9.28 ft
- 1-year change
- -27.15 ft
Reading as of 2026-10-11 | the U.S. Bureau of Reclamation
- Since yesterday
- +0.00 ft
- 7-day change
- -4.97 ft
- 30-day change
- -9.28 ft
- 1-year change
- -27.15 ft
- Record high
- 8172.56 ft
In brief
Upper Stillwater Reservoir stood at 8,097.51 feet on Oct 11, 2026. That is lower than 100% of October readings since 2021.
Source: U.S. Bureau of Reclamation
Lake level timeline
Records and averages
| Current level | 8097.51 ft |
|---|---|
| Record high | 8172.56 ft (2023-06-19) |
| Record low | 8028.76 ft (2023-04-08) |
| Average of all readings | 8113.74 ft |
| Data span | 5 years (2,000 readings) |
Level schematic
Trout stocking on Upper Stillwater Reservoir
UDWR stocked Upper Stillwater Reservoir 3 times in 2026, 11,084 fish in total. Brook trout at 3.12 and 3.45. UDWR's published figures for 2026, the most recent season it has confirmed, record 11,084 trout actually released here across 3 visits.
| Species | Fish | When |
|---|---|---|
| Brook trout | 3,004 | June 2026 |
| Brook trout | 7,319 | July 2026 |
| Brook trout | 761 | August 2026 |
UDWR lists a week or a month rather than a date, and counts fish as an estimate. Full Utah stocking schedule →
Frequently asked questions
Is Upper Stillwater Reservoir full right now?
As of 2026-10-11, Upper Stillwater Reservoir sits at 8097.51 ft, which is low for this time of year. Over the past 30 days the level has fallen 9.28 ft.
What is the water level at Upper Stillwater Reservoir today?
The most recent reading at Upper Stillwater Reservoir is 8097.51 ft (2026-10-11), sourced from the U.S. Bureau of Reclamation. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Upper Stillwater Reservoir has ever been?
The highest level for Upper Stillwater Reservoir in our records is 8172.56 ft on 2023-06-19. The lowest is 8028.76 ft on 2023-04-08. Our record covers about 5 years of readings.
Is Upper Stillwater Reservoir low for this time of year?
Compared with every October 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 Upper Stillwater 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. Upper Stillwater Reservoir has fallen 9.28 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 Upper Stillwater Reservoir changed over the past year?
Upper Stillwater Reservoir is -27.15 ft compared with this date last year (8097.51 ft today). The full-history chart above covers 5 years, with a record high of 8172.56 ft and a record low of 8028.76 ft.
Download and cite
Quote this reading
Upper Stillwater Reservoir stood at 8,097.51 feet on Oct 11, 2026. That is lower than 100% of October readings since 2021.
Download the full record
upper-stillwater-reservoir-ut-water-level-history.csv
How to cite
MyWaterLevel, “Upper Stillwater Reservoir water level, 2021 to 2026,” data from U.S. Bureau of Reclamation, https://mywaterlevel.com/lake/ut/upper-stillwater-reservoir/, accessed Oct 13, 2026.
Source: the U.S. Bureau of Reclamation. All Utah lake levels. Readings are provisional and may be revised. About our data and methods.