LakeLevelIs Wanapum Lake low right now?
Wanapum Lake was at 565.97 ft on October 10, 2026, 5.53 ft below its full pool of 571.5 ft. That is 1.28 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been falling about 0.13 ft a day.
Wanapum Lake on Oct 10 in past years
Daily levels, last two weeks
| Date | Level (ft) | Change | vs full pool |
|---|---|---|---|
| Oct 10 | 565.96 | −1.19 | −5.5 |
| Oct 9 | 567.15 | −0.47 | −4.4 |
| Oct 8 | 567.62 | −0.89 | −3.9 |
| Oct 7 | 568.51 | +0.24 | −3.0 |
| Oct 6 | 568.27 | +0.17 | −3.2 |
| Oct 5 | 568.10 | +1.55 | −3.4 |
| Oct 4 | 566.55 | −0.34 | −5.0 |
| Oct 3 | 566.89 | −0.27 | −4.6 |
| Oct 2 | 567.16 | +0.02 | −4.3 |
| Oct 1 | 567.14 | +1.06 | −4.4 |
| Sep 30 | 566.08 | −1.62 | −5.4 |
| Sep 29 | 567.70 | −0.81 | −3.8 |
| Sep 28 | 568.51 | −0.06 | −3.0 |
| Sep 27 | 568.57 | +0.20 | −2.9 |
About Wanapum Lake
- Full pool
- 571.5 ft (Top of Normal)
- 10-year range
- 523.6 ft (May 19, 2019) to 571.4 ft (April 18, 2016)
- Operated by
- U.S. Army Corps of Engineers
- Data
- U.S. Army Corps of Engineers — NWDP district, WAN
- Datum
- NGVD29
Lakes near Wanapum Lake
- Roza Dam ReservoirWashington · 25 mi 1,220.5 ft ±0.0 wkHigher than usual for this time of year
- Moses Lake @ Moses LakeWashington · 35 mi 1,046.8 ft ±0.0 wkNormal for this time of year
- SOAP LakeWashington · 43 mi 1,068.4 ft ±0.0 wkLower than usual for this time of year
- LENORE LakeWashington · 49 mi 1,076.7 ft −0.0 wkHigher than usual for this time of year
- Rimrock LakeWashington · 57 mi 2,856.6 ft −11.0 wkNormal for this time of year
- Cle Elum LakeWashington · 58 mi 2,123.2 ft −0.5 wkNormal for this time of year
Questions
Is Wanapum Lake low right now?
Wanapum Lake was at 565.97 ft on October 10, 2026, 5.53 ft below its full pool of 571.5 ft. That is 1.28 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been falling about 0.13 ft a day.
What is full pool for Wanapum Lake?
Full pool (Top of Normal) is 571.5 ft above sea level, per U.S. Army Corps of Engineers. Levels above it mean the operator is storing flood water; levels below it are normal in late summer and winter drawdowns.
How often is the Wanapum Lake level updated?
The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.
Where does this data come from?
U.S. Army Corps of Engineers (NWDP district, WAN). Readings are provisional and can be revised.