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

The latest available reading shows William H. Harsha Lake is currently 5.2 feet above full pool, with a water-surface elevation of 738.2 feet.

738.20 ft · Updated 3 days ago · U.S. Army Corps of Engineers

Current level

738.2ft

+5.20 ft vs full pool

Status unavailable

Vs full pool

Since last reading

Up 5.97 ft

Previous readingSep 19732.23 ft

7-day change

Up 3.26 ft

7-day trend: Rising

8 daily readings in the last 7 days

30-day change

Up 5.07 ft

31 daily readings in the last 30 days

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Water Level History

Current
738.20 ft
24h
+5.97 ft
7d
+3.26 ft
30d
+5.07 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains above the full pool

William H. Harsha Lake is currently 738.20 ft, 5.20 ft above its full pool. The lake has risen 3.26 ft over the past 7 days and 5.07 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

5.2 ft above full pool

Current level
738.2 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

Daily level summary

DateLevelChange
Sep 20, 2026738.2+5.97
Sep 19, 2026732.23+0.05
Sep 18, 2026732.18+0.01
Sep 17, 2026732.17-0.03
Sep 16, 2026732.2-0.04
Sep 15, 2026732.24-0.94
Sep 14, 2026733.18-1.76

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

  • The current water level at William H. Harsha Lake is 738.2 ft (updated 3 days 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 3.26 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 5.20 ft above full pool.

Lake level glossary

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

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