St. Lawrence River Monthly Bulletin
The US Army Corps of Engineers, Buffalo District, in conjunction with Environment 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
|
September 2016
|
Kingston
|
Ogdensburg
|
Iroquois(above dam)
|
Long Sault (above dam)
|
Summerstown
|
Pointe Claire
|
|
|
|
|
|
|
|
|
|
Mean for month (preliminary data)
|
244.98 ft
74.67 m
|
243.86 ft
74.33 m
|
241.77 ft
73.69 m
|
239.86 ft
73.11 m
|
153.22 ft
46.70 m
|
68.77 ft
20.96 m
|
|
Mean for month
last year
|
245.64 ft
74.87 m
|
244.26 ft
74.45 m
|
241.60 ft
73.64 m
|
238.98 ft
72.84 m
|
153.48 ft
46.78 m
|
70.18 ft
21.39 m
|
|
|
|
|
|
|
|
|
|
Period of record
|
1960 - 2015
|
1960 - 2015
|
1960 - 2015
|
1960 - 2015
|
1960 - 2015
|
1960 - 2015
|
|
Maximum monthly mean (year)
|
246.42 ft
75.11 m
1986
|
245.24 ft
74.75 m
1967
|
243.83 ft
74.32 m
1967
|
242.42 ft
73.89 m
1967
|
153.67 ft
46.84 m
1997
|
71.33 ft
21.74 m
1986
|
|
Long-term monthly mean (year)
|
245.31 ft
74.77 m
|
244.26 ft
74.45 m
|
242.09 ft
73.79 m
|
240.16 ft
73.20 m
|
153.28 ft
46.72 m
|
69.36 ft
21.14 m
|
|
Minimum monthly mean (year)
|
244.26 ft
74.45 m
1964
|
243.50 ft
74.22 m
2012
|
241.04 ft
73.47 m
1987
|
238.65 ft
72.74 m
1985
|
152.66 ft
46.53 m
1964
|
67.16 ft
20.47 m
1964
|
|
|
|
|
|
|
|
|
|
Probable mean for next month
|
244.62 ft
74.56 m
|
243.64 ft
74.26 m
|
241.44 ft
73.59 m
|
239.93 ft
73.13 m
|
153.28 ft
46.72 m
|
68.73 ft
20.95 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.
