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River Bulletin

St. Lawrence River Monthly Bulletin

The US Army Corps of Engineers, Buffalo District, in conjunction with Environment & Climate Change Canada, publishes a Monthly Water Levels Bulletin for the St. Lawrence River. The bulletin is distributed free of charge each month, with data from April through September. You may request an e-mail subscription to the bulletin by sending your name and e-mail address to the Buffalo District Water Management Team, 1776 Niagara Street, Buffalo, NY 14207.   

To better serve the public, the Buffalo District has made the bulletin available via our Web server. The bulletin consists of graphs showing past, present, and predicted monthly mean water levels at the six locations shown in the map below and listed following the map. These graphs are labeled in French as well as English.    

Monthly Mean Water Level Bulletin Table 

July 2018

Kingston

Ogdensburg

Iroquois(above dam)

Long Sault (above dam)

Summerstown

Pointe Claire

 

 

 

 

 

 

 

Mean for month (preliminary data)

246.16 ft

75.03 m

244.78 ft

74.61 m

242.06 ft

73.78 m

239.40 ft

72.97 m

153.35 ft

46.74 m

70.51 ft

21.49 m

Mean for month last year

248.23 ft

75.66 m

246.65 ft

75.18 m

243.67 ft

74.27 m

240.55 ft

73.32 m

153.67 ft

46.84 m

72.87 ft

22.21 m

 

 

 

 

 

 

 

Period of record

1960 - 2017

1960 - 2017

1960 - 2017

1960 - 2017

1960 - 2017

1960 - 2017

Maximum monthly mean (year)

248.23 ft

75.66 m

2017

246.65 ft

75.18 m

2017

244.78 ft

74.61 m

1967

242.52 ft

73.92 m

1967

153.71 ft

46.85 m

1998

72.87 ft

22.21 m

2017

Long-term monthly mean (year)

246.29 ft

75.07 m

245.24 ft

74.75 m

243.24 ft

74.14 m

241.27 ft

73.54 m

153.25 ft

46.71 m

69.78 ft

21.27 m

Minimum monthly mean (year)

245.05 ft

74.69 m

1964

244.42 ft

74.50 m

2012

241.67 ft

73.66 m

1987

238.98 ft

72.84 m

1987

152.62 ft

46.52 m

1964

67.06 ft

20.44 m

1965

 

Probable mean for next month

245.67 ft

74.88 m

244.32 ft

74.47 m

241.31ft

73.55 m

239.01 ft

72.85 m

153.48 ft

46.78 m

70.24 ft

21.41 m

 

 

 

 

 

 

 

To convert from IGLD 1985 to  IGLD 1955 subtract

0.58 ft

0.176 m

0.37 ft

0.113 m

0.39 ft

0.119 m

0.34 ft

0.105 m

0.31 ft

0.096 m

0.27 ft

0.082 m

You can retrieve the graph for any location by selecting from the list located directly below the map. Each graph is a 700x400, 85 kilobyte (approx.) GIF.

The data on the graphs and in the table are preliminary and subject to revision.