San Luis Reservoir lake and shoreline

San Luis Reservoir Water Level

California

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Conditions that may affect safety or access. Always verify with official sources before heading out.

Lake-specific pages: Weather · Lake level.

Alert details

San Luis Reservoir is currently 57.0 feet below full pool, with a water-surface elevation of 487.0 feet.

487.03 ft · Updated 1 day ago · California Data Exchange Center

Current level

487.03ft

−56.97 ft vs full pool

Low

Vs full pool

Since last reading

Up 0.67 ft

Previous readingSep 8486.36 ft

7-day change

Up 1.96 ft

7-day trend: Rising

4 daily readings in the last 7 days

30-day change

Up 1.96 ft

4 daily readings in the last 30 days

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Water Level History

Elevation (ft) NGVD29 · MSL

492 ft515 ft537 ftFULL POOL 544.00 ftSep 7Sep 10

Level status

56.97 ft below full pool

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

Reference levels

  • Full pool544 ft

Watershed drought

No Drought

Abnormally dry (D0), not official drought.

Severity

NoneExtreme
Trend
Stable

Watershed drought conditions

Merced 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 Merced County, CA

Daily level summary

  • Sep 9, 2026

    487.03 ft

    +0.67 ft

  • Sep 8, 2026

    486.36 ft

    +0.63 ft

  • Sep 7, 2026

    485.73 ft

    +0.66 ft

  • Sep 6, 2026

    485.07 ft

    —

Common questions about San Luis Reservoir’s water level

  • The current water level at San Luis Reservoir is 487.03 ft (updated 1 day ago). You can track the San Luis Reservoir lake level on the interactive chart and daily history above.

  • Full pool for San Luis Reservoir is 544 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the San Luis Reservoir lake level is rising — rising about 1.96 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, San Luis Reservoir is currently 56.97 ft below full pool.

Lake level glossary

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

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