Rivers in Pennsylvania

Clarion River at Johnsonburg

Elk County, PennsylvaniaNWS JHNP1USGS 03028500State College office

Below flood stage
2.25ftStage

Observed Sat, Sep 26, 11:45 PM EDT

Flood stage
7.00 ft
Record crest
16.70 ft1942

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood10.00 ft
Moderate flood9.00 ft
Minor flood7.00 ft
Action5.00 ft
  1. 10.00 ftA number of homes flood. Travel is restricted on Route 219.
  2. 9.00 ftWater level reaches Route 219. Several homes are affected by high water.
  3. 7.00 ftHigh water results in overflow of both banks.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding11%
Moderate floodingUnder 5%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 22, 2026.

Crest history

13 crests on NOAA’s list since 1942.

#DateStage
1July 1, 194216.70 ft
2January 19, 199612.60 ft
3June 22, 19729.99 ft
4June 20, 19899.86 ft
5December 1, 20109.72 ft
6May 28, 19469.20 ft
7September 22, 19927.49 ft
8September 18, 20047.43 ft
9September 9, 20047.23 ft
10March 6, 20117.12 ft
11February 28, 20117.06 ft
12June 21, 20197.02 ft
13November 1, 20197.00 ft

Most recent crests

  • November 1, 2019: 7.00 ft
  • June 21, 2019: 7.02 ft
  • March 6, 2011: 7.12 ft
  • February 28, 2011: 7.06 ft
  • December 1, 2010: 9.72 ft
  • September 18, 2004: 7.43 ft
  • September 9, 2004: 7.23 ft
  • January 19, 1996: 12.60 ft
  • September 22, 1992: 7.49 ft
  • June 20, 1989: 9.86 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. Stage may be affected by ice.

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.