Lake Sonoma lake and shoreline

Lake Sonoma Water Level

California

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Lake Sonoma

Lake Sonoma is currently 6.9 feet below full pool, with a water-surface elevation of 444.1 feet.

444.11 ft · Updated 3 hours ago · USACE SPN District

Current level

444.11ft

−6.89 ft vs full pool

Low

Vs full pool

Since last reading

Down 0.09 ft

Previous readingOct 24444.25 ft

7-day change

Down 0.58 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 2.51 ft

29 daily readings in the last 30 days

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Water Level History

Current
444.11 ft
24h
-0.09 ft
7d
-0.58 ft
30d
-2.51 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

Water Temperature

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Lake Level Context

Level remains below the full pool

Lake Sonoma is currently 444.11 ft, 6.89 ft below its full pool. The lake has fallen 0.58 ft over the past 7 days and 2.51 ft over the past 30 days.

Lake Sonoma Level Details

Reference elevations, recent daily readings, data sources, and answers to common questions.

Conditions & Reference

Level status

6.89 ft below full pool

Current level
444.11 ft
Full pool
451 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
USACE SPN District

Reference levels

  • Full pool451 ft

Surrounding county drought

No Drought

Dominant category Abnormally Dry (D0); not counted as official drought.

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Sonoma County, CA

No Drought

No Drought. No USDM drought categories are reported for Sonoma County, CA. These figures describe the surrounding county from the lake location, not the lake itself.. Trend: Stable compared with last week. Official drought (D1–D4) no

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought (D1–D4)

No

Abnormally Dry (D0) is present in the surrounding county, but D0 is not counted as official drought (D1–D4).

U.S. Drought Monitor · map date Oct 20, 2026. Updated weekly. Official drought means U.S. Drought Monitor categories D1–D4 (Moderate through Exceptional). Abnormally Dry (D0) is not counted as official drought. droughtmonitor.unl.eduView drought map for Sonoma County, CA

Daily level summary

DateLevelChange
Oct 25, 2026444.16-0.09
Oct 24, 2026444.25-0.09
Oct 23, 2026444.34-0.08
Oct 22, 2026444.42-0.08
Oct 21, 2026444.5-0.08
Oct 20, 2026444.58-0.08
Oct 19, 2026444.66-0.08

Common questions about Lake Sonoma’s water level

  • The current water level at Lake Sonoma is 444.11 ft (updated 3 hours ago). You can track the Lake Sonoma lake level on the interactive chart and daily history above.

  • Full pool for Lake Sonoma is 451 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Lake Sonoma lake level is falling — falling about 0.58 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Sonoma is currently 6.89 ft below full pool.

Lake level glossary

Definitions for pool targets, datums, and how elevation readings are labeled.

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