Diamond Valley Lake lake and shoreline

Diamond Valley Lake Water Level

California

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Diamond Valley Lake

The latest available reading shows Diamond Valley Lake is currently 3.2 feet above full pool, with a water-surface elevation of 1751.2 feet.

1751.15 ft · Updated Sep 24 · Metropolitan Water District of Southern California

Current level

1,751.15ft

+3.15 ft vs full pool

Status unavailable

Vs full pool

Since last reading

No prior reading

Change appears once we have two daily level summaries on file.

Prior reading unavailable

7-day change

Insufficient 7-day history

7-day change is shown once at least a week of daily data is on file.

7-day trend: Rising

Not enough readings in this period

Need at least two readings in the last 7 days for a trend preview.

30-day change

Insufficient 30-day history

30-day change is shown once 30 days of daily history are available.

Not enough readings in this period

Need at least two readings in the last 30 days for a trend preview.

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Water Level History

Current
1751.15 ft

Chart updating

The trend line appears after we have at least two daily level points for this lake. Check back as historical data fills in.

Reference line is designed full pool.

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Lake Level Context

Level remains above the full pool

Diamond Valley Lake is currently 1751.15 ft, 3.15 ft above its full pool.

Diamond Valley Lake Level Details

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

Conditions & Reference

Level status

3.15 ft above full pool

Current level
1,751.15 ft
Full pool
1,748 ft
DatumVertical reference for published pool and stage elevations at this lake (from the lake catalog).
Not available
Elevation reference
MSL
Source
Metropolitan Water District of Southern California

Reference levels

  • Full pool1,748 ft

Surrounding county drought

Moderate Drought

48.6% of surrounding county in official drought (D1–D4).

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Riverside County, CA

Moderate Drought

Moderate Drought. The largest share of Riverside County, CA is in Moderate Drought (D1), an official USDM drought category. These figures describe the surrounding county from the lake location, not the lake itself.. Trend: Stable compared with last week. Official drought (D1–D4) yes

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought (D1–D4)

Yes

48.6% of the surrounding county is in official drought categories (D1–D4). Dominant category remains Moderate Drought.

Typical county impacts (USDM guidance)

  • Streamflows in the surrounding county may run below normal
  • Soils and vegetation can dry between rain events
  • Water managers may begin to watch supply more closely

U.S. Drought Monitor · map date Oct 6, 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 Riverside County, CA

Daily level summary

DateLevelChange
Sep 11, 20261,750.18—

Common questions about Diamond Valley Lake’s water level

  • The current water level at Diamond Valley Lake is 1,751.15 ft (updated sep 24). You can track the Diamond Valley Lake lake level on the interactive chart and daily history above.

  • Full pool for Diamond Valley Lake is 1,748 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Diamond Valley Lake lake level is rising. See the history chart above for the full picture.

  • Based on the latest gauge reading, Diamond Valley Lake is currently 3.15 ft above full pool.

Lake level glossary

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

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