The administrative boundaries database contains boundaries in categories political boundaries, lake units, and protected areas.  This includes vector boundary delineations for states and provinces, counties, townships, urban areas, fish management units, fish statistical districts, minute grids, marine protected areas, fish refuges, military restricted areas, federal lands, state and provincial lands, conservation and wildlife areas, tribal and First Nation lands, and Tribal Consent Decree boundaries. Available as a single download in Esri file geodatabase format.

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    Great Lakes Aquatic Habitat Framework is a comprehensive spatial framework, database, and classification for Great Lakes ecological data.
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