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Finding GIS Data for Canada

The Canadian government offers a vast amount of free downloadable GIS data for use in personal or public projects. The Great Lakes Information Network (GLIN) uses these resources, along with U.S. data, to compile blended Great Lakes Region data with detailed boundaries and added fields for things like basin statistics and population estimates. Read more »

Finding GIS data for the U.S.

New GIS users are pleased to discover a vast amount of free downloadable GIS data compiled by U.S. government agencies. The trick is knowing which data are available from which agencies. The Great Lakes Information Network provides Great Lakes Region data with detailed boundaries and added fields for things like basin statistics, population estimates, or… Read more »

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Mapping Dams and Invasive Sea Lamprey

The Great Lakes Fishery Commission and the Great Lakes Commission have launched a mapping application that offers the ability to trace the effects of dams and dam removal on sea lamprey populations in the Great Lakes.  Sea lampreys, which are invasive in the Great Lakes and destroy fish with a voracious appetite, need certain stream types for… Read more »

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Welcome to the new GLIN Maps

Here at the Great Lakes Commission, we deliver information to support the orderly, integrated and comprehensive development, use and conservation of the natural resources of the Great Lakes basin and St. Lawrence River. We’ve developed this new Maps site to give you quick and convenient access to a wide range of mapping tools and data sets for… Read more »