

Table 1. 



Monthly average 



lake level 



si 





Levels 



Lake 

 Superior 



Lake 

 Michigan -Huron 



Lake 

 St. Clair 



Lake 

 Erie 



Lake 

 Ontario 



Maximum Stage ^ 



602.3 



582.0 



576.2 



573.5 



248.0 



Lake Datum^ 



600.0 



576.8 



571.7 



568.6 



242.8 



Minimum Stage ^ 



598.3 



575.4 



569.9 



567.5 



241.4 



Recorded lake levels for the preceding 18 months and 

 probable levels for a 6-month period can be obtained from: 



Monthly Bulletin of Lake Levels 



Lake Survey Center, NOAA 



U.S. Department of Commerce 



630 Federal Building and U.S. Courthouse 



Detroit, Michigan 48226 



International Great Lakes Datum (1955) . Elevations are 

 in feet above mean water level in Gulf of St. Lawrence 

 at Father Point, Quebec, Canada. 



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