Click on the question of your choice to learn more about the IGLD 85.
For more facts and figures about thelevels of the Great Lakes, go to the Great Lakes Information Network .
For addresses of organizations to which to write for information click on the addresses below:
Where can more information be obtained?
Concerning Navigation Charts and Water Levels:
National Oceanic and Atmospheric Administration
National Ocean Service
Canadian Hydrographic Service
Fisheries and Oceans Canada
Canada Centre for Inland Waters
867 Lakeshore Road
Bulington, Ontario L7R 4A6
(416)336-4844
Marine Environmental Data Service
Fisheries and Oceans Canada
1202-200 Kent Street
Ottawa, Ontario K1A 0E6
(613)990-0231
Concerning Hydraulic and Hydrologic Research:
Great Lakes Environmental Research Laboratory,
NOAA 2205 Commonwealth Blvd.
Ann Arbor, Michigan 48105 (313)668-2254
Other Great Lakes-St. Lawrence River Basin Information:
Great Lakes Water Level Communications Centre
Canada Centre for Inland Waters 867 Lakeshore Road
Burlington, Ontario L7R 4R6 (416)336-4581
Concerning Great Lakes Regulation and Water Level Forecasts:
U.S. Army Corps of Engineers,
North Central Division 111 North Canal Street
Chicago, Illinois 60606-7205 (312)353-6364
U.S. Army Corps of Engineers,
Detroit District P.O. Box 1027
Detroit, Michigan 48231 (313)226-6440 or 6441
U.S. Army Corps of Engineers,
Buffalo District 1776 Niagara Street
Buffalo, New York 14207 (716)879-4257
Great Lakes-St. Lawrence Office
Water Planning and Management Branch Environment
Canada 111 Water Street East,
Suite 232 Cornwall, Ontario K6H 6S2 (613)938-5725
Concerning Conversions between IGLD and Other Datums:
National Oceanic and Atmospheric Administration
Center for Operational Oceanographic Products and Services (CO-OPS)
http://tidesandcurrents.noaa.gov
1305 East-West Highway
Silver Spring, MD 20910
(301)719-3191
National Oceanic and Atmospheric Administration
National Geodetic Survey (NGS)-
http://www.ngs.noaa.gov
1315 East-West Highway
Silver Spring, MD 20910
(301)713-3242
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