Mark Twain Lake lake and shoreline

Mark Twain Lake Water Level

Officially Mark Twain Lake (Salt River)

Missouri

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Mark Twain Lake

Mark Twain Lake is currently 3.2 feet below full pool, with a water-surface elevation of 602.8 feet.

602.76 ft · Updated 4 hours ago · U.S. Army Corps of Engineers

Current level

602.76ft

−3.24 ft vs full pool

Low

Vs full pool

Since last reading

Up 0.01 ft

Previous readingNov 8602.73 ft

7-day change

Up 0.52 ft

7-day trend: Rising

8 daily readings in the last 7 days

30-day change

Down 0.37 ft

28 daily readings in the last 30 days

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Water Level History

Current
602.76 ft
24h
+0.01 ft
7d
+0.52 ft
30d
-0.37 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

Mark Twain Lake is currently 602.76 ft, 3.24 ft below its full pool. The lake has risen 0.52 ft over the past 7 days and fallen 0.37 ft over the past 30 days.

Mark Twain Lake Level Details

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

Conditions & Reference

Level status

3.24 ft below full pool

Current level
602.76 ft
Full pool
606 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
USACE

Reference levels

  • Full pool606 ft
  • Flood stage638 ft

Surrounding county drought

Moderate Drought

49% of surrounding county in official drought (D1–D4).

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Ralls County, MO

Moderate Drought

Moderate Drought. The largest share of Ralls County, MO 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

49% 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 Nov 3, 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 Ralls County, MO

Daily level summary

DateLevelChange
Nov 9, 2026602.74+0.01
Nov 8, 2026602.73+0.03
Nov 7, 2026602.7+0.08
Nov 6, 2026602.62+0.14
Nov 5, 2026602.48+0.18
Nov 4, 2026602.3+0.09
Nov 3, 2026602.21-0.01

Common questions about Mark Twain Lake’s water level

  • The current water level at Mark Twain Lake is 602.76 ft (updated 4 hours ago). You can track the Mark Twain Lake lake level on the interactive chart and daily history above.

  • Full pool for Mark Twain Lake is 606 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Mark Twain Lake lake level is rising — rising about 0.52 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Mark Twain Lake is currently 3.24 ft below full pool.

Lake level glossary

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

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