Lake Somerville lake and shoreline

Lake Somerville Water Level

Officially Lake Somerville (Yegua Creek)

Texas

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Lake Somerville

Lake Somerville is currently 1.8 feet below full pool, with a water-surface elevation of 236.2 feet.

236.18 ft · Updated Oct 26 · Texas Water Development Board

Current level

236.18ft

−1.82 ft vs full pool

Normal

Vs full pool

Since last reading

Down 0.04 ft

Previous readingOct 24236.22 ft

7-day change

Down 0.31 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 0.50 ft

29 daily readings in the last 30 days

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Water Level History

Current
236.18 ft
24h
-0.04 ft
7d
-0.31 ft
30d
-0.50 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 Somerville is currently 236.18 ft, 1.82 ft below its full pool. The lake has fallen 0.31 ft over the past 7 days and 0.50 ft over the past 30 days.

Lake Somerville Level Details

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

Conditions & Reference

Level status

1.82 ft below full pool

Current level
236.18 ft
Full pool
238 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
Texas Water Development Board

Reference levels

  • Full pool238 ft
  • Flood stage258 ft

Surrounding county drought

Moderate Drought

100% of surrounding county in official drought (D1–D4).

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Washington County, TX

Moderate Drought

Moderate Drought. The largest share of Washington County, TX 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

100% 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 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 Washington County, TX

Daily level summary

DateLevelChange
Oct 25, 2026236.18-0.04
Oct 24, 2026236.22-0.05
Oct 23, 2026236.27-0.05
Oct 22, 2026236.32-0.05
Oct 21, 2026236.37-0.04
Oct 20, 2026236.41-0.04
Oct 19, 2026236.45-0.04

Common questions about Lake Somerville’s water level

  • The current water level at Lake Somerville is 236.18 ft (updated Oct 26). You can track the Lake Somerville lake level on the interactive chart and daily history above.

  • Full pool for Lake Somerville is 238 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 Somerville lake level is falling — falling about 0.31 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Somerville is currently 1.82 ft below full pool.

Lake level glossary

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

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