Lake Sonoma lake and shoreline

Lake Sonoma Water Level

California

Make Home Lake
Favorite

Lake Sonoma is currently 3.0 feet below full pool, with a water-surface elevation of 448.0 feet.

448.04 ft · Updated 1 hour ago · USACE SPN District

Current level

448.04ft

−2.96 ft vs full pool

Normal

Vs full pool

Since last reading

Down 0.09 ft

Previous readingSep 9448.18 ft

7-day change

Down 0.26 ft

7-day trend: Falling

4 daily readings in the last 7 days

30-day change

Down 0.26 ft

4 daily readings in the last 30 days

Share feedback or correction

Water Level History

Elevation (ft) NGVD29 · MSL

448 ft450 ft451 ftFULL POOL 451.00 ftSep 8Sep 11

Level status

2.96 ft below full pool

Current level
448.04 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

Watershed drought

No Drought

None reported for the surrounding watershed.

Severity

NoneExtreme
Trend
Stable

Watershed drought conditions

Sonoma County, CA

No Drought

No Drought. No official drought conditions.. Trend: Stable compared with last week. Official drought no

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought

No

No official drought is reported for the surrounding watershed.

U.S. Drought Monitor · map date Sep 8, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Sonoma County, CA

Daily level summary

  • Sep 10, 2026

    448.09 ft

    -0.09 ft

  • Sep 9, 2026

    448.18 ft

    -0.09 ft

  • Sep 8, 2026

    448.27 ft

    -0.08 ft

  • Sep 7, 2026

    448.35 ft

    —

Common questions about Lake Sonoma’s water level

  • The current water level at Lake Sonoma is 448.04 ft (updated 1 hour 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 0.26 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Sonoma is currently 2.96 ft below full pool.

Lake level glossary

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

Privacy preferences

Ads and analytics are not optional. You can still choose optional functional cookies. Essential cookies stay on so the site works.

  • Essential

    Required for sign-in, security, and core site features. These cannot be turned off because the service would not work without them.

  • Functional & preferences

    Remembers optional choices such as display preferences beyond what essential cookies require. Most preference storage today is essential for signed-in features.