Great Lakes Information Network (GLIN)

Discover, publish, and acquire geospatial data for areas within the Great Lakes region. The GLIN has a portal for viewing and exploring the Great Lakes and associated data layers, a data portal through which GIS and geospatial data for the Great Lakes can be published and acquired, and a gallery of downloadable images depicting Great Lakes geophysical data. The majority of the data are available for download at no cost.