Rivers in Pennsylvania

Casselman River at Markleton

Somerset County, PennsylvaniaNWS MAKP1USGS 03079000State College office

Below flood stage
2.28ftStage

Observed Mon, Sep 21, 6:30 PM EDT

Flood stage
9.00 ft
Record crest
16.40 ft1936

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Minor flood9.00 ft
Action9.00 ft

Crest history

3 crests on NOAA’s list since 1936.

#DateStage
1March 17, 193616.40 ft
2January 19, 199613.26 ft
3May 13, 202511.63 ft

Most recent crests

  • May 13, 2025: 11.63 ft
  • January 19, 1996: 13.26 ft
  • March 17, 1936: 16.40 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Ohio River Forecast Center. Forecasts are not available. Only observed stages are available for this point.

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.