William H. Harsha Lake lake and shoreline

William H. Harsha Lake Water Level

Officially William H. Harsha Lake (East Fork Little Miami River)

Ohio

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William H. Harsha Lake

William H. Harsha Lake is currently 2.7 feet below full pool, with a water-surface elevation of 730.3 feet.

730.31 ft · Updated 15 hours ago · U.S. Army Corps of Engineers

Current level

730.31ft

−2.69 ft vs full pool

Normal

Vs full pool

Since last reading

Down 0.02 ft

Previous readingNov 8730.33 ft

7-day change

Up 0.17 ft

7-day trend: Rising

8 daily readings in the last 7 days

30-day change

Down 0.94 ft

30 daily readings in the last 30 days

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Water Level History

Current
730.31 ft
24h
-0.02 ft
7d
+0.17 ft
30d
-0.94 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

William H. Harsha Lake is currently 730.31 ft, 2.69 ft below its full pool. The lake has risen 0.17 ft over the past 7 days and fallen 0.94 ft over the past 30 days.

William H. Harsha Lake Level Details

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

Conditions & Reference

Level status

2.69 ft below full pool

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

Reference levels

  • Full pool733 ft
  • Flood stage795 ft

Surrounding county drought

Abnormally Dry

Dominant category Abnormally Dry (D0); not counted as official drought.

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Clermont County, OH

Abnormally Dry

Abnormally Dry. The largest share of Clermont County, OH is Abnormally Dry (D0), which the U.S. Drought Monitor does not count as official drought. These figures describe the surrounding county from the lake location, not the lake itself.. Trend: Stable compared with last week. Official drought (D1–D4) no

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought (D1–D4)

No

Abnormally Dry (D0) is present in the surrounding county, but D0 is not counted as official drought (D1–D4).

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 Clermont County, OH

Daily level summary

DateLevelChange
Nov 9, 2026730.31-0.02
Nov 8, 2026730.33+0.04
Nov 7, 2026730.29+0.13
Nov 6, 2026730.16-0.22
Nov 5, 2026730.38+0.28
Nov 4, 2026730.1-0.01
Nov 3, 2026730.11-0.03

Common questions about William H. Harsha Lake’s water level

  • The current water level at William H. Harsha Lake is 730.31 ft (updated 15 hours ago). You can track the William H. Harsha Lake lake level on the interactive chart and daily history above.

  • Full pool for William H. Harsha Lake is 733 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the William H. Harsha Lake lake level is rising — rising about 0.17 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, William H. Harsha Lake is currently 2.69 ft below full pool.

Lake level glossary

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

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