Rivers in Pennsylvania

Juniata River at Mapleton Depot

Huntingdon County, PennsylvaniaNWS MPLP1USGS 01563500State College office

Below flood stage
3.78ftStage

Observed Sun, Sep 20, 5:15 PM EDT

Flood stage
20.00 ft
Forecast crest
5.50 ftMon, Sep 21, 8:00 AM EDT
Record crest
38.20 ft1936

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood26.00 ft
Moderate flood24.00 ft
Minor flood20.00 ft
Action15.00 ft
  1. 30.00 ftWidespread flooding occurs in the Mapleton area.
  2. 28.00 ftNumerous homes and businesses in the Mapleton area are flooded. High water inundates the approaches to the bridge connecting Mapleton with Route 22.
  3. 26.00 ftMany homes on the right, or south bank are affected. The approaches of the highway bridge connecting Mapleton with Route 22 are inundated.
  4. 24.00 ftThe right, or south bank overflows. High water affects homes on the right bank near the gage. The glass plant upstream of the gage on the left bank is also flooded.
  5. 22.00 ftThe left, or north bank overflows into low lying areas. Route 22 is threatened.
  6. 20.00 ftThe left or north bank overflows into low lying areas.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding12%
Moderate flooding7%
Major floodingUnder 5%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Crest history

10 crests on NOAA’s list since 1936.

#DateStage
1March 18, 193638.20 ft
2June 23, 197233.07 ft
3November 25, 195026.40 ft
4September 18, 200423.76 ft
5January 20, 199622.47 ft
6December 31, 194220.82 ft
7April 3, 197020.76 ft
8February 26, 196118.61 ft
9February 15, 198418.33 ft
10March 12, 195218.14 ft

Most recent crests

  • September 18, 2004: 23.76 ft
  • January 20, 1996: 22.47 ft
  • February 15, 1984: 18.33 ft
  • June 23, 1972: 33.07 ft
  • April 3, 1970: 20.76 ft
  • February 26, 1961: 18.61 ft
  • March 12, 1952: 18.14 ft
  • November 25, 1950: 26.40 ft
  • December 31, 1942: 20.82 ft
  • March 18, 1936: 38.20 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Middle Atlantic River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for 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.