Lake Berryessa lake and shoreline

Lake Berryessa Water Level

Officially Lake Berryessa (Monticello Dam)

California

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The latest available reading shows Lake Berryessa is currently 9.7 feet below full pool, with a water-surface elevation of 430.3 feet.

430.32 ft · Updated 11 days ago · California Data Exchange Center

Current level

430.32ft

−9.68 ft vs full pool

Status unavailable

A verified operating range is not available for this lake.

Vs full pool

Since last reading

Down 0.21 ft

Previous readingAug 27430.59 ft

7-day change

Down 0.55 ft

7-day trend: Falling

7 daily readings in the last 7 days

30-day change

Down 2.29 ft

30 daily readings in the last 30 days

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Water Level History

Elevation (ft) NGVD29 · MSL

431 ft435 ft439 ftFULL POOL 440.00 ftJul 31Aug 30

Level status

9.68 ft below full pool

Current level
430.32 ft
Full pool
440 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
California Data Exchange Center

Reference levels

  • Full pool440 ft
  • Flood stage440 ft

Watershed drought

No Drought

Abnormally dry (D0), not official drought.

Severity

NoneExtreme
Trend
Stable

Watershed drought conditions

Napa 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

Current conditions are classified as Abnormally Dry (D0), which is not considered official drought.

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

Daily level summary

  • Aug 29, 2026

    430.38 ft

    -0.21 ft

  • Aug 27, 2026

    430.59 ft

    -0.06 ft

  • Aug 26, 2026

    430.65 ft

    -0.07 ft

  • Aug 25, 2026

    430.72 ft

    -0.08 ft

  • Aug 24, 2026

    430.8 ft

    -0.06 ft

  • Aug 23, 2026

    430.86 ft

    -0.07 ft

  • Aug 22, 2026

    430.93 ft

    -0.06 ft

Common questions about Lake Berryessa’s water level

  • The current water level at Lake Berryessa is 430.32 ft (updated 11 days ago). You can track the Lake Berryessa lake level on the interactive chart and daily history above.

  • Full pool for Lake Berryessa is 440 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 Berryessa lake level is falling — falling about 0.55 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Berryessa is currently 9.68 ft below full pool.

Lake level glossary

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

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