LakeLevelIs Lake Sonoma low right now?
Lake Sonoma was at 445.55 ft on October 10, 2026, 5.55 ft below its full pool of 451.1 ft. That is 8.18 ft above the typical level for October 10 — higher than in 9 of 10 past years. Over the past week the lake has been falling about 0.08 ft a day.
Lake Sonoma on Oct 10 in past years
Daily levels, last two weeks
| Date | Level (ft) | Change | vs full pool |
|---|---|---|---|
| Oct 10 | 445.56 | −0.05 | −5.5 |
| Oct 9 | 445.61 | −0.09 | −5.5 |
| Oct 8 | 445.70 | −0.08 | −5.4 |
| Oct 7 | 445.78 | −0.09 | −5.3 |
| Oct 6 | 445.87 | −0.09 | −5.2 |
| Oct 5 | 445.96 | −0.08 | −5.1 |
| Oct 4 | 446.04 | −0.09 | −5.1 |
| Oct 3 | 446.13 | −0.08 | −5.0 |
| Oct 2 | 446.21 | −0.08 | −4.9 |
| Oct 1 | 446.29 | −0.09 | −4.8 |
| Sep 30 | 446.38 | −0.10 | −4.7 |
| Sep 29 | 446.48 | −0.08 | −4.6 |
| Sep 28 | 446.56 | −0.08 | −4.5 |
| Sep 27 | 446.64 | −0.08 | −4.5 |
About Lake Sonoma
- Full pool
- 451.1 ft (Top of Conservation)
- 10-year range
- 376.4 ft (December 9, 2022) to 478.5 ft (January 23, 2017)
- Operated by
- U.S. Army Corps of Engineers
- Data
- U.S. Army Corps of Engineers — SPK district, Lake Sonoma-Pool
- Datum
- NGVD29
Lakes near Lake Sonoma
- CLEAR Lake A LAKEPORT CACalifornia · 22 mi 1,322.8 ft −0.2 wkLatest reading
- Clear Lake - Cache CreekCalifornia · 26 mi 2.1 ft −0.2 wkNormal for this time of year
- Lake MendocinoCalifornia · 34 mi 729.9 ft −1.4 wkNormal for this time of year
- Indian Valley ReservoirCalifornia · 36 mi 1,458.3 ft −0.1 wkNormal for this time of year
- Van Arsdale Reservoir 24hr AvgCalifornia · 46 mi 1,505.4 ft +0.0 wkLower than usual for this time of year
- Lake PillsburyCalifornia · 47 mi 1,887.1 ft −0.6 wkNormal for this time of year
Questions
Is Lake Sonoma low right now?
Lake Sonoma was at 445.55 ft on October 10, 2026, 5.55 ft below its full pool of 451.1 ft. That is 8.18 ft above the typical level for October 10 — higher than in 9 of 10 past years. Over the past week the lake has been falling about 0.08 ft a day.
What is full pool for Lake Sonoma?
Full pool (Top of Conservation) is 451.1 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 Lake Sonoma 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 (SPK district, Lake Sonoma-Pool). Readings are provisional and can be revised.