Carlyle Lake lake and shoreline

Carlyle Lake Water Level

Illinois

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Carlyle Lake is currently 36.3 feet below full pool, with a water-surface elevation of 408.7 feet.

408.74 ft · Updated 1 hour ago · USACE MVS District

Current level

408.74ft

−36.26 ft vs full pool

Low

Vs full pool

Since last reading

Down 0.04 ft

Previous readingSep 9408.87 ft

7-day change

Up 0.05 ft

7-day trend: Falling

4 daily readings in the last 7 days

30-day change

Up 0.05 ft

4 daily readings in the last 30 days

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Water Level History

Elevation (ft) NGVD29 · MSL

413 ft427 ft441 ftFULL POOL 445.00 ftSep 8Sep 11

Level status

36.26 ft below full pool

Current level
408.74 ft
Full pool
445 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
USACE MVS District

Reference levels

  • Full pool445 ft
  • Flood stage463 ft

Watershed drought

Abnormally Dry

Abnormally dry (D0), not official drought.

Severity

NoneExtreme
Trend
Worsening

Watershed drought conditions

Clinton County, IL

Abnormally Dry

Abnormally Dry. The surrounding county is abnormally dry, which is not official drought.. Trend: Worsening compared with last week. Official drought no

Severity

NoneExtreme

Weekly trend

Worsening

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 Clinton County, IL

Daily level summary

  • Sep 10, 2026

    408.83 ft

    -0.04 ft

  • Sep 9, 2026

    408.87 ft

    +0.1 ft

  • Sep 8, 2026

    408.77 ft

    -0.01 ft

  • Sep 7, 2026

    408.78 ft

    —

Common questions about Carlyle Lake’s water level

  • The current water level at Carlyle Lake is 408.74 ft (updated 1 hour ago). You can track the Carlyle Lake lake level on the interactive chart and daily history above.

  • Full pool for Carlyle Lake is 445 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Carlyle Lake lake level is falling — falling about 0.05 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Carlyle Lake is currently 36.26 ft below full pool.

Lake level glossary

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

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