River Conditions
Illustrated map of Grand Lake St Marys

River stage

Mt Vernon, Kokosing River

River level
2.47 ft
Status
Below flood stage
7-day change
-0.05 ft
Recent high
5.00 ft
Recent low
2.29 ft

Last reported 2026-10-13 | NWS MVEO1

30-day change
-0.16 ft
Average
2.69 ft
Readings
122
Data span
122 days
Record crest
18.19 ft

In brief

The Kokosing River at Mt Vernon, OH read 2.47 ft on Oct 13, 2026, 8.53 ft below action stage. That is 0.16 ft lower than 30 days earlier.

Source: National Weather Service gauge MVEO1

River level timeline

2.32.62.93.23.5SEP 13SEP 18SEP 23SEP 28OCT 03OCT 08OCT 13HIGH 3.36LOW 2.442.47 ftLAST READING

Stage threshold profile

Action stage 11.00 ftMinor flooding 14.00 ftModerate flooding 14.50 ftMajor flooding 17.00 ft CURRENT 2.47 ft

Highest crests on record

RankCrestDate
1 18.19 ft 1959-01-21
2 14.82 ft 1998-06-29
3 13.85 ft 2011-02-28
4 13.52 ft 2017-11-19
5 13.08 ft 1964-03-10
6 12.99 ft 1963-03-04
7 12.66 ft 2018-04-04
8 12.38 ft 2013-07-10

Flood crests recorded at this gauge by the National Weather Service.

What happens at each level

  1. 14.00 ft

    FEMA 1 percent flood level. River approaching top of levee system.

  2. 14.50 ft

    Levee breached siginificant flooding along area roads including Mt. Vernon, Maplewood Avenue, Cherry to Maple. Backwater flooding along Center Run, Curtis Run and Adams Run.

  3. 15.50 ft

    Significant flooding can be expected along Mt. Vernon and Maplewood Avenues and from Cherry to Maple Streets. Also flooding will occur along Center, Curtis and Adams Runs.

  4. 17.00 ft

    Major flooding will occur from Howard Street to Greenwood Avenue and along Division, Butler and Kirk Streets.

  5. 18.00 ft

    FEMA 0.2 percent flood level.

Written by the local National Weather Service forecast office for this exact gauge.

Frequently asked questions

Is the Kokosing River flooding at Mt Vernon?

No. The Kokosing River at Mt Vernon is at 2.47 ft, 8.53 ft below action stage.

What is the flood stage at Mt Vernon?

The National Weather Service sets action stage 11 ft, minor flooding 14 ft, moderate flooding 14.5 ft and major flooding 17 ft.

What is the highest the Kokosing River has been at Mt Vernon?

The highest crest on record is 18.19 ft, on 1959-01-21.

Is the Kokosing River high or low right now at Mt Vernon?

At 2.47 ft it is higher than 28% of readings over the last 122 days.

Stage and flood information from the NOAA National Weather Service (gauge MVEO1); daily history from the U.S. Geological Survey (site 03136500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.