Lake Lewisville lake and shoreline

Lake Lewisville Water Level

Officially Lewisville Lake (Elm Fork Trinity River)

Texas

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Lake-specific pages: Weather · Lake level.

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Lake Lewisville

Lake Lewisville is currently 3.5 feet below full pool, with a water-surface elevation of 518.5 feet.

518.54 ft · Updated 2 hours ago · U.S. Geological Survey (USGS)

Current level

518.54ft

−3.46 ft vs full pool

Low

Vs full pool

Since last reading

Up 0.01 ft

Previous readingOct 4518.57 ft

7-day change

Up 0.40 ft

7-day trend: Rising

8 daily readings in the last 7 days

30-day change

Down 0.78 ft

31 daily readings in the last 30 days

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Water Level History

Current
518.54 ft
24h
+0.01 ft
7d
+0.40 ft
30d
-0.78 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Lake Lewisville is currently 518.54 ft, 3.46 ft below its full pool. The lake has risen 0.40 ft over the past 7 days and fallen 0.78 ft over the past 30 days.

Lake Lewisville Level Details

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

Conditions & Reference

Level status

3.46 ft below full pool

Current level
518.54 ft
Full pool
522 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
U.S. Geological Survey (USGS)

Reference levels

  • Full pool522 ft
  • Flood stage532 ft

Watershed drought

Extreme Drought

100% of watershed in official drought (D1+).

Severity

NoneExtreme
Trend
Worsening

Watershed drought conditions

Denton County, TX

Extreme Drought

Extreme Drought. Extreme drought conditions are present.. Trend: Worsening compared with last week. Official drought yes

Severity

NoneExtreme

Weekly trend

Worsening

Compared with last week

Official drought

Yes

100% of the watershed is currently classified as official drought (D1+).

Expected impacts

  • Significantly reduced stream inflows
  • Lake levels may fall quickly without heavy rain
  • Dry vegetation and elevated wildfire risk
  • Water use restrictions may apply nearby

U.S. Drought Monitor · map date Sep 29, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Denton County, TX

Daily level summary

DateLevelChange
Oct 5, 2026518.58+0.01
Oct 4, 2026518.57-0.01
Oct 3, 2026518.58+0.02
Oct 2, 2026518.56+0.02
Oct 1, 2026518.54+0.31
Sep 30, 2026518.23+0.12
Sep 29, 2026518.11-0.07

Common questions about Lake Lewisville’s water level

  • The current water level at Lake Lewisville is 518.54 ft (updated 2 hours ago). You can track the Lake Lewisville lake level on the interactive chart and daily history above.

  • Full pool for Lake Lewisville is 522 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 Lewisville lake level is rising — rising about 0.40 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Lewisville is currently 3.46 ft below full pool.

Lake level glossary

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

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