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

Michael J. Kirwan Reservoir is currently 5.7 feet below full pool, with a water-surface elevation of 980.3 feet.

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

Current level

980.3ft

−5.70 ft vs full pool

Low

Vs full pool

Since last reading

Down 0.03 ft

Previous readingNov 8980.35 ft

7-day change

Down 0.14 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 1.16 ft

30 daily readings in the last 30 days

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Water Level History

Current
980.30 ft
24h
-0.03 ft
7d
-0.14 ft
30d
-1.16 ft

Elevation (ft) NAVD88 · MSL

Reference line is designed full pool.

Water Temperature

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Lake Level Context

Level remains below the full pool

Michael J. Kirwan Reservoir is currently 980.30 ft, 5.70 ft below its full pool. The lake has fallen 0.14 ft over the past 7 days and 1.16 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

5.7 ft below full pool

Current level
980.3 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

Surrounding county drought

Abnormally Dry

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

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Portage County, OH

Abnormally Dry

Abnormally Dry. The largest share of Portage 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 Portage County, OH

Daily level summary

DateLevelChange
Nov 9, 2026980.32-0.03
Nov 8, 2026980.35-0.04
Nov 7, 2026980.39-0.01
Nov 6, 2026980.4-0.02
Nov 5, 2026980.420
Nov 4, 2026980.42-0.01
Nov 3, 2026980.43-0.03

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

  • The current water level at Michael J. Kirwan Reservoir is 980.3 ft (updated 4 hours 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 0.14 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 5.70 ft below full pool.

Lake level glossary

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

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