Name: Framework Zones

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Description: The GLAHF classification zones consists of 5 defined zones coastal terrestrial, islands, coastal margin, nearshore, and offshore. The coastal terrestrial, islands, coastal margin, and nearshore zones consist of 30-m grid cells. The offshore zone consists of 1.8-km grid cells which can be found in the "glahf_offshore_zones_1800m_grid" layer. In ordered to align the 30-m grids with the 1.8-km grids the 30m-m grids were extended into the offshore where needed. The nested 30-m and 1.8-km resolution framework grid was agreed on by many Great Lakes researchers and managers at a workshop hosted by the Great Lakes Fishery Trust in January 2011. The framework aligns with the USGS National Land Cover Dataset (NLCD). The shoreline and islands were compiled from a variety of data sources from both the U.S. and Canada with the best available data (see shoreline and islands layers). The shoreline attempts to represent the ordinary high water mark (OHWM) as closely as possible at the given resolution.

Service Item Id: a09b2873107a4bb38c719a57767be2ab

Copyright Text: The Great Lakes Aquatic Habitat Framework (GLAHF) project has been funded by the Great Lakes Fishery Trust and led by Dr. Catherine Riseng at the University of Michigan School for Environment and Sustainability, with partners from Michigan Department of Natural Resources-Institute for Fisheries Research, NOAA Great Lakes Environmental Research Laboratory, International Joint Commission, Michigan State University, The Nature Conservancy, Ontario Ministry of Natural Resources, University of Minnesota-Duluth, U.S. Fish & Wildlife Service, U.S. Geological Survey and many collaborating partners in both the USA and Canada. More information about this project can be found at https://www.glahf.org/.

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