Rivers in New York

Oswegatchie River near Heuvelton

St. Lawrence County, New YorkNWS HEUN6USGS 04263000South Burlington office

Below flood stage
0.94ftStage

Observed Tue, Sep 29, 4:15 PM EDT

Flood stage
7.50 ft
Forecast crest
0.90 ftTue, Sep 29, 8:00 PM EDT
Record crest
10.36 ft1960

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Minor flood7.50 ft
Action6.50 ft
  1. 7.50 ftLow lying areas of River Road and Backus Camp Road between Rensselaer Falls and Heuvelton will flood. Lowland flooding of fields and cropland along the river will also occur. Downstream in Ogdensburg, low lying portions of Simms Camp Road and the Maple City recreational path will be inundated. Shoreline flooding is also possible on Black Lake.
  2. 6.50 ftLowland flooding of fields and cropland along the river from Rensselaer Falls to Ogdensburg may occur.

Flood outlook

Chance of flooding, October to December

CategoryChance
Minor floodingUnder 5%
Moderate flooding-99900%
Major flooding-99900%

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

Crest history

64 crests on NOAA’s list since 1917.

#DateStage
1April 6, 196010.36 ft
2April 9, 19479.33 ft
3March 17, 19779.19 ft
4February 23, 19549.11 ft
5January 11, 19309.10 ft
6February 17, 19848.80 ft
7April 14, 19938.78 ft
8April 10, 20148.70 ft
9March 25, 19388.57 ft
10April 8, 19568.52 ft
11March 26, 20038.50 ft
12April 6, 19598.49 ft
13March 31, 19638.47 ft
14January 13, 19988.47 ft
15April 18, 20148.45 ft
16November 3, 20177.93 ft
17April 7, 19747.63 ft
18March 24, 19767.63 ft
19March 30, 19177.60 ft
20March 31, 19897.47 ft
21April 19, 19947.46 ft
22January 23, 19967.34 ft
23March 20, 19907.25 ft
24August 12, 20247.19 ft
25January 28, 19997.17 ft

Most recent crests

  • August 12, 2024: 7.19 ft
  • March 23, 2022: 6.65 ft
  • March 30, 2021: 5.89 ft
  • March 13, 2020: 5.83 ft
  • November 4, 2019: 5.97 ft
  • November 3, 2017: 7.93 ft
  • March 13, 2016: 6.28 ft
  • April 5, 2015: 5.45 ft
  • April 18, 2014: 8.45 ft
  • April 10, 2014: 8.70 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Northeast 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.