Michael J. Kirwan Reservoir lake and shoreline

Michael J. Kirwan Reservoir Water Level

Officially Michael J. Kirwan Dam and Reservoir (West Branch Mahoning River)

Ohio

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Michael J. Kirwan Reservoir

The latest available reading shows Michael J. Kirwan Reservoir is currently 3.0 feet below full pool, with a water-surface elevation of 983.0 feet.

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

Current level

982.99ft

−3.01 ft vs full pool

Status unavailable

Vs full pool

Since last reading

No meaningful change

Previous readingSep 20982.99 ft

7-day change

Down 0.22 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 0.15 ft

31 daily readings in the last 30 days

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Water Level History

Current
982.99 ft
24h
0.00 ft
7d
-0.22 ft
30d
-0.15 ft

Elevation (ft) NAVD88 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Michael J. Kirwan Reservoir is currently 982.99 ft, 3.01 ft below its full pool. The lake has fallen 0.22 ft over the past 7 days and 0.15 ft over the past 30 days.

Michael J. Kirwan Reservoir Level Details

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

Conditions & Reference

Level status

3.01 ft below full pool

Current level
982.99 ft
Full pool
986 ft
DatumElevation referenced to North American Vertical Datum of 1988.
NAVD88
Elevation reference
MSL
Source
USACE

Reference levels

  • Full pool986 ft

Daily level summary

DateLevelChange
Sep 21, 2026982.990
Sep 20, 2026982.99-0.04
Sep 19, 2026983.03-0.07
Sep 18, 2026983.1-0.03
Sep 17, 2026983.13-0.03
Sep 16, 2026983.16+0.01
Sep 15, 2026983.15-0.06

Common questions about Michael J. Kirwan Reservoir’s water level

  • The current water level at Michael J. Kirwan Reservoir is 982.99 ft (updated 3 days ago). You can track the Michael J. Kirwan Reservoir lake level on the interactive chart and daily history above.

  • Full pool for Michael J. Kirwan Reservoir is 986 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Michael J. Kirwan Reservoir lake level is falling — falling about 0.22 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Michael J. Kirwan Reservoir is currently 3.01 ft below full pool.

Lake level glossary

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

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