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Great Lakes Information
Weekly Lake Erie Update
As of May 10, 2012 the mean water level on Lake Erie was 571.81 feet (174.29 m). The long term average for the month of May is 571.84 feet (174.30 m).
The water level relative to chart datum for the following locations was:
| Toledo |
2.6 feet (0.78 m) |
| Cleveland |
2.6 feet (0.78 m) |
| Erie |
2.7 feet (0.81 m) |
| Buffalo |
2.7 feet (0.82 m) |
The Lake Erie mean outflow was 217,500 ft3/s (6160 m3/s)
The Lake Erie levels and outflows may be obtained by calling the Buffalo District Public Affairs Office at (716) 879-4209.
Weekly Lake Ontario Update
As of May 10, 2012 the mean water level on Lake Ontario was 245.83 feet (74.93 m). The long term average for the month of May is 245.73 feet (74.90 m).
The water level relative to chart datum for the following locations was:
| Ogdensburg |
2.4 feet (0.72 m) |
| Cornwall |
1.4 feet (0.44 m) |
| Summerstown |
1.4 feet (0.43 m) |
| Pointe Claire |
3.3 feet (1.02 m) |
| Port of Montreal |
3.3 feet (1.01 m) |
The Lake Ontario mean outflow was 265,600 ft3/s (7520 m3/s).
More information is available on the International St. Lawrence Board's internet site http://www.islrbc.org/, or you can also contact the office of the secretary of the United States Section of the Board at (312) 353-4333.
Note: All water levels are reported witn reference to
International Great Lakes Datum 1985.
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