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Oswegatchie River near Heuvelton

Highest listed crest 10.36 ftFlood stage 7.5 ft64 crests since 1917

The Oswegatchie River near Heuvelton crested above flood stage 19 times among the 64 crests the National Weather Service lists from 1917 to 2024. The highest, 10.36 ft on April 6, 1960, was minor flooding, 2.86 feet above flood stage.

The gauge

Highest listed crest
10.36 ft
April 6, 1960; 19,600 cubic feet per second
Flood stage
7.5 ft
No major stage set
Crests at major
0
19 above flood stage
Most recent flood crest
November 3, 2017
7.93 ft, minor flooding
Location
St. Lawrence County
New York

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Oswegatchie River near Heuvelton
Action stage6.523Aug 12, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)7.519Nov 3, 2017Minimal or no property damage, but possibly some public threat

Every listed crest

64 crests from 1917 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Oswegatchie River near Heuvelton, 1917 to 2024 024681012ft Flood stage 7.5 ft Mar 30, 1917: 7.60 ft, minor flooding; 11,700 cubic feet per secondJan 11, 1930: 9.10 ft, minor flooding; 15,600 cubic feet per secondMar 23, 1936: 7.00 ft, action stage; 9,980 cubic feet per secondMar 25, 1938: 8.57 ft, minor flooding; 14,200 cubic feet per secondApr 9, 1947: 9.33 ft, minor flooding; 15,800 cubic feet per secondAug 17, 1949: 0.47 ft, below flood stage; 130 cubic feet per secondFeb 23, 1954: 9.11 ft, minor flooding; 15,300 cubic feet per secondApr 8, 1956: 8.52 ft, minor flooding; 13,500 cubic feet per secondApr 6, 1959: 8.49 ft, minor flooding; 13,700 cubic feet per secondApr 6, 1960: 10.36 ft, minor flooding; 19,600 cubic feet per secondMar 31, 1963: 8.47 ft, minor flooding; 13,600 cubic feet per secondApr 5, 1970: 5.59 ft, below flood stage; 6,880 cubic feet per secondApr 17, 1971: 6.93 ft, action stage; 9,670 cubic feet per secondApr 19, 1972: 6.63 ft, action stage; 9,000 cubic feet per secondApr 6, 1973: 6.27 ft, below flood stage; 8,240 cubic feet per secondApr 7, 1974: 7.63 ft, minor flooding; 11,400 cubic feet per secondApr 22, 1975: 6.15 ft, below flood stage; 8,000 cubic feet per secondMar 24, 1976: 7.63 ft, minor flooding; 11,400 cubic feet per secondMar 17, 1977: 9.19 ft, minor flooding; 15,800 cubic feet per secondApr 16, 1978: 6.42 ft, below flood stage; 8,540 cubic feet per secondMar 8, 1979: 6.85 ft, action stage; 9,510 cubic feet per secondNov 29, 1979: 5.55 ft, below flood stage; 6,790 cubic feet per secondFeb 24, 1981: 6.85 ft, action stage; 9,510 cubic feet per secondApr 3, 1982: 6.88 ft, action stage; 9,580 cubic feet per secondApr 27, 1983: 5.52 ft, below flood stage; 6,730 cubic feet per secondFeb 17, 1984: 8.80 ft, minor flooding; 13,500 cubic feet per secondFeb 28, 1985: 7.16 ft, action stage; 11,400 cubic feet per secondMar 22, 1986: 6.61 ft, action stage; 8,960 cubic feet per secondDec 5, 1986: 5.46 ft, below flood stage; 6,610 cubic feet per secondMar 28, 1988: 6.50 ft, action stage; 8,500 cubic feet per secondMar 31, 1989: 7.47 ft, action stage; 11,000 cubic feet per secondMar 20, 1990: 7.25 ft, action stage; 10,500 cubic feet per secondMar 8, 1991: 6.53 ft, action stage; 8,780 cubic feet per secondApr 14, 1992: 6.38 ft, below flood stage; 8,510 cubic feet per secondApr 14, 1993: 8.78 ft, minor flooding; 14,500 cubic feet per secondApr 19, 1994: 7.46 ft, action stage; 11,000 cubic feet per secondJan 19, 1995: 6.66 ft, action stage; 9,070 cubic feet per secondJan 23, 1996: 7.34 ft, action stage; 10,700 cubic feet per secondNov 12, 1996: 6.66 ft, action stage; 9,070 cubic feet per secondJan 13, 1998: 8.47 ft, minor flooding; 13,600 cubic feet per secondJan 28, 1999: 7.17 ft, action stage; 10,300 cubic feet per secondApr 16, 2001: 6.58 ft, action stage; 9,050 cubic feet per secondApr 17, 2002: 5.93 ft, below flood stage; 7,580 cubic feet per secondMar 26, 2003: 8.50 ft, minor flooding; 14,000 cubic feet per secondSep 12, 2004: 5.74 ft, below flood stage; 7,180 cubic feet per secondApr 5, 2005: 6.83 ft, action stage; 9,640 cubic feet per secondOct 16, 2005: 6.00 ft, below flood stage; 7,730 cubic feet per secondDec 3, 2006: 5.65 ft, below flood stage; 6,980 cubic feet per secondJan 11, 2008: 6.65 ft, action stage; 9,000 cubic feet per secondJan 1, 2009: 6.42 ft, below flood stage; 8,680 cubic feet per secondMay 1, 2011: 6.46 ft, below flood stage; 8,560 cubic feet per secondMay 19, 2011: 6.73 ft, action stage; 9,400 cubic feet per secondMar 17, 2012: 4.89 ft, below flood stage; 5,440 cubic feet per secondApr 14, 2013: 5.18 ft, below flood stage; 6,010 cubic feet per secondApr 10, 2014: 8.70 ft, minor floodingApr 18, 2014: 8.45 ft, minor flooding; 13,860 cubic feet per secondApr 5, 2015: 5.45 ft, below flood stage; 6,560 cubic feet per secondMar 13, 2016: 6.28 ft, below flood stage; 8,360 cubic feet per secondNov 3, 2017: 7.93 ft, minor flooding; 12,400 cubic feet per secondNov 4, 2019: 5.97 ft, below flood stage; 7,670 cubic feet per secondMar 13, 2020: 5.83 ft, below flood stage; 7,370 cubic feet per secondMar 30, 2021: 5.89 ft, below flood stage; 7,500 cubic feet per secondMar 23, 2022: 6.65 ft, action stage; 8,350 cubic feet per secondAug 12, 2024: 7.19 ft, action stage; 10,400 cubic feet per second Highest, 10.36 ft, Apr 6, 1960 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Oswegatchie River near Heuvelton 1910s: 1 1920s: 0 1930s: 2 1940s: 1 1950s: 3 3 1960s: 2 1970s: 3 1980s: 1 1990s: 2 2000s: 1 2010s: 3 2020s: 0 1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

The 50 highest of 64 listed crests.

Highest listed crests, Oswegatchie River near Heuvelton
1Apr 6, 196010.36+2.86Minor19,600
2Apr 9, 19479.33+1.83Minor15,800
3Mar 17, 19779.19+1.69Minor15,800
4Feb 23, 19549.11+1.61Minor15,300
5Jan 11, 19309.10+1.60Minor15,600
6Feb 17, 19848.80+1.30Minor13,500
7Apr 14, 19938.78+1.28Minor14,500
8Apr 10, 20148.70+1.20Minor—
9Mar 25, 19388.57+1.07Minor14,200
10Apr 8, 19568.52+1.02Minor13,500
11Mar 26, 20038.50+1.00Minor14,000
12Apr 6, 19598.49+0.99Minor13,700
13Mar 31, 19638.47+0.97Minor13,600
14Jan 13, 19988.47+0.97Minor13,600
15Apr 18, 20148.45+0.95Minor13,860
16Nov 3, 20177.93+0.43Minor12,400
17Apr 7, 19747.63+0.13Minor11,400
18Mar 24, 19767.63+0.13Minor11,400
19Mar 30, 19177.60+0.10Minor11,700
20Mar 31, 19897.47−0.03Action11,000
21Apr 19, 19947.46−0.04Action11,000
22Jan 23, 19967.34−0.16Action10,700
23Mar 20, 19907.25−0.25Action10,500
24Aug 12, 20247.19−0.31Action10,400
25Jan 28, 19997.17−0.33Action10,300
26Feb 28, 19857.16−0.34Action11,400
27Mar 23, 19367.00−0.50Action9,980
28Apr 17, 19716.93−0.57Action9,670
29Apr 3, 19826.88−0.62Action9,580
30Mar 8, 19796.85−0.65Action9,510
31Feb 24, 19816.85−0.65Action9,510
32Apr 5, 20056.83−0.67Action9,640
33May 19, 20116.73−0.77Action9,400
34Jan 19, 19956.66−0.84Action9,070
35Nov 12, 19966.66−0.84Action9,070
36Jan 11, 20086.65−0.85Action9,000
37Mar 23, 20226.65−0.85Action8,350
38Apr 19, 19726.63−0.87Action9,000
39Mar 22, 19866.61−0.89Action8,960
40Apr 16, 20016.58−0.92Action9,050
41Mar 8, 19916.53−0.97Action8,780
42Mar 28, 19886.50−1.00Action8,500
43May 1, 20116.46−1.04Below flood stage8,560
44Apr 16, 19786.42−1.08Below flood stage8,540
45Jan 1, 20096.42−1.08Below flood stage8,680
46Apr 14, 19926.38−1.12Below flood stage8,510
47Mar 13, 20166.28−1.22Below flood stage8,360
48Apr 6, 19736.27−1.23Below flood stage8,240
49Apr 22, 19756.15−1.35Below flood stage8,000
50Oct 16, 20056.00−1.50Below flood stage7,730

Other gauges in St. Lawrence County

Flood gauges in St. Lawrence County
Piercefield12.513.40 ft, May 1, 20110
South Colton10.011.27 ft, Apr 29, 20110
Brasher Center11.015.30 ft, Apr 6, 19370

St. Lawrence County: every hazard · River floods across the country · New York

NOAA National Water Prediction Service, gauge HEUN6, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.