Rivers in Ohio

Kokosing River at Mt Vernon

Knox County, OhioNWS MVEO1USGS 03136500Brooklyn Heights office

Below flood stage
2.55ftStage

Observed Wed, Sep 30, 10:15 AM EDT

Flood stage
14.00 ft
Record crest
18.19 ft1959

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood17.00 ft
Moderate flood14.50 ft
Minor flood14.00 ft
Action11.00 ft
  1. 18.00 ftFEMA 0.2 percent flood level.
  2. 17.00 ftMajor flooding will occur from Howard Street to Greenwood Avenue and along Division, Butler and Kirk Streets.
  3. 15.50 ftSignificant 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. 14.50 ftLevee breached siginificant flooding along area roads including Mt. Vernon, Maplewood Avenue, Cherry to Maple. Backwater flooding along Center Run, Curtis Run and Adams Run.
  5. 14.00 ftFEMA 1 percent flood level. River approaching top of levee system.

Flood outlook

Chance of flooding, October to December

CategoryChance
Minor floodingUnder 5%
Moderate floodingUnder 5%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 29, 2026.

Crest history

35 crests on NOAA’s list since 1955.

#DateStage
1January 21, 195918.19 ft
2June 29, 199814.82 ft
3February 28, 201113.85 ft
4November 19, 201713.52 ft
5March 10, 196413.08 ft
6March 4, 196312.99 ft
7April 4, 201812.66 ft
8July 10, 201312.38 ft
9February 25, 195612.34 ft
10May 20, 195711.91 ft
11January 12, 200511.87 ft
12March 8, 202211.59 ft
13June 1, 199711.59 ft
14May 19, 202011.51 ft
15June 25, 201410.93 ft
16March 2, 200710.63 ft
17May 19, 196910.63 ft
18April 3, 202410.52 ft
19May 11, 199610.45 ft
20January 28, 199410.11 ft
21April 6, 202510.10 ft
22March 4, 19559.91 ft
23December 22, 19989.80 ft
24September 14, 19799.70 ft
25February 26, 19629.70 ft

Most recent crests

  • April 6, 2025: 10.10 ft
  • April 3, 2024: 10.52 ft
  • March 25, 2023: 8.70 ft
  • March 8, 2022: 11.59 ft
  • May 10, 2021: 8.84 ft
  • May 19, 2020: 11.51 ft
  • March 31, 2019: 9.59 ft
  • April 4, 2018: 12.66 ft
  • November 19, 2017: 13.52 ft
  • April 12, 2016: 7.27 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Ohio River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.