Lake levels
Fort Supply Lake, OK
- water level
- 2002.91 ft
- Condition
- Below average for this time of year
- 7-day change
- -0.07 ft
- Below full
- 1.09 ft
- 30-day change
- -0.06 ft
Reading as of 2026-10-13 | the U.S. Army Corps of Engineers
- Since yesterday
- -0.02 ft
- 7-day change
- -0.07 ft
- 30-day change
- -0.06 ft
- Below full
- 1.09 ft
- 1-year change
- -1.48 ft
In brief
Fort Supply Lake stood at 2,002.91 feet on Oct 13, 2026, 1.09 feet below its full pool of 2,004 feet. That is lower than 80% of October readings since 2015.
Source: U.S. Army Corps of Engineers
Lake level timeline
Records and averages
| Current level | 2002.91 ft |
|---|---|
| Full pool (conservation) | 2004.00 ft |
| Flood pool | 2028.00 ft |
| Record high | 2014.88 ft (2019-06-08) |
| Record low | 2002.39 ft (2020-10-24) |
| Average of all readings | 2004.36 ft |
| Data span | 11 years (4,238 readings) |
Level schematic
Frequently asked questions
Is Fort Supply Lake full right now?
As of 2026-10-13, Fort Supply Lake sits at 2002.91 ft, which is below average for this time of year. That is 1.09 ft below full pool of 2004.00 ft. Over the past 30 days the level has fallen 0.06 ft.
What is the water level at Fort Supply Lake today?
The most recent reading at Fort Supply Lake is 2002.91 ft (2026-10-13), sourced from the U.S. Army Corps of Engineers. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Fort Supply Lake has ever been?
The highest level for Fort Supply Lake in our records is 2014.88 ft on 2019-06-08. The lowest is 2002.39 ft on 2020-10-24. Our record covers about 11 years of readings.
Is Fort Supply Lake low for this time of year?
Compared with every October in our records, the current level is higher than 20% 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.
Why is Fort Supply Lake 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. Fort Supply Lake has fallen 0.06 ft over the past 30 days. For the operational reason on any given week, check the U.S. Army Corps of Engineers directly.
How much has Fort Supply Lake changed over the past year?
Fort Supply Lake is -1.48 ft compared with this date last year (2002.91 ft today). The full-history chart above covers 11 years, with a record high of 2014.88 ft and a record low of 2002.39 ft.
Download and cite
Quote this reading
Fort Supply Lake stood at 2,002.91 feet on Oct 13, 2026, 1.09 feet below its full pool of 2,004 feet. That is lower than 80% of October readings since 2015.
Download the full record
fort-supply-lake-ok-water-level-history.csv
How to cite
MyWaterLevel, “Fort Supply Lake water level, 2015 to 2026,” data from U.S. Army Corps of Engineers, https://mywaterlevel.com/lake/ok/fort-supply-lake/, accessed Oct 13, 2026.
Source: the U.S. Army Corps of Engineers. All Oklahoma lake levels. Readings are provisional and may be revised. About our data and methods.