Rivers in New York

Allegheny River at Salamanca

Cattaraugus County, New YorkNWS SLMN6USGS 03011020Buffalo office

Below flood stage
3.40ftStage

Observed Wed, Sep 23, 2:45 AM EDT

Flood stage
12.00 ft
Forecast crest
3.40 ftWed, Sep 23, 8:00 AM EDT
Record crest
24.01 ft1972

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood21.00 ft
Moderate flood14.00 ft
Minor flood12.00 ft
Action9.00 ft
  1. 21.00 ftMajor flood, widespread flooding of commercial and residential areas in and around Salamanca. Protective dikes topped at 21 to 22 feet. Dikes located on left bank 0.1 mile upstream to 0.3 mile downstream, and on right bank from 0.1 mile upstream to 0.7 mile downstream and 1.6 to 2.1 miles downstream.
  2. 14.00 ftModerate flood, moderate flooding along entire reach in areas unprotected by dikes. More widespread flooding upstream.
  3. 12.00 ftFlood stage, minor flooding along entire reach in areas unprotected by dikes.
  4. 9.00 ftAction stage, banks subject to some local overflow 1 to 2 miles upstream. Little or no damage.

Flood outlook

Chance of flooding, September to November

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 22, 2026.

Crest history

36 crests on NOAA’s list since 1909.

#DateStage
1June 23, 197224.01 ft
2January 19, 199616.41 ft
3September 26, 196716.24 ft
4June 23, 198915.44 ft
5March 8, 195615.11 ft
6July 20, 194214.55 ft
7January 27, 197814.53 ft
8December 2, 201014.42 ft
9February 19, 197614.39 ft
10January 9, 199814.28 ft
11March 15, 200713.89 ft
12January 13, 201713.83 ft
13January 2, 193413.78 ft
14April 2, 199313.78 ft
15February 15, 198413.73 ft
16March 2, 191013.60 ft
17January 13, 201813.43 ft
18March 22, 194813.27 ft
19May 2, 190913.00 ft
20March 26, 191313.00 ft
21January 22, 195912.99 ft
22February 21, 198112.94 ft
23March 27, 193612.87 ft
24March 6, 196412.87 ft
25April 6, 194712.84 ft

Most recent crests

  • February 18, 2022: 12.78 ft
  • January 13, 2018: 13.43 ft
  • January 13, 2017: 13.83 ft
  • December 2, 2010: 14.42 ft
  • January 25, 2010: 12.29 ft
  • February 7, 2008: 12.62 ft
  • March 15, 2007: 13.89 ft
  • September 9, 2004: 12.33 ft
  • March 22, 2003: 12.02 ft
  • January 9, 1998: 14.28 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Ohio River Forecast Center. Forecasts are issued routinely year-round. Impact statements listed below may not be representative during times of ice jam flooding. Stage may be affected by ice during winter months.

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.