Name: Coastal wetlands

Display Field: USGS_QUAD

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Description: The Great Lakes Coastal Wetland Inventory was developed through the Great Lakes Coastal Wetland Consortium (GLCWC) as a bi-national initiative to create a single, hydrogeomorphically classified inventory of all coastal wetlands of the Great Lakes Basin. This inventory is built upon the most comprehensive coastal wetland data currently available for the Great Lakes and connecting channels. For the U.S., National Wetlands Inventory (NWI); Wisconsin Wetland Inventory (WWI); Ohio Wetland Inventory (OWI); and U.S. Fish and Wildlife Service (USFWS) reports and corresponding topographic maps by Charles E. Herdendorf which describe coastal wetlands in the Great Lakes Basin (Herdendorf Wetland Inventory, HWI); are the major datasets included. Additional wetland projects were utilized for each lake if available. The Canadian dataset is built off 'The Ontario Great Lakes Coastal Wetland Atlas'. Published in March 2003, this document summarized all known data to-date for coastal wetlands and identifies numerous data gaps in the current information. Ontario Ministry of Natural Resources (OMNR) digital Evaluated Wetlands polygon data provided the spatial extents for digital wetland boundaries where available. Data gaps have been filled in using air photograph interpretation following National Biological Service guidelines, and digitization techniques following GLCWC guidelines. The inventory contains the spatial extents, hydrogeomorphic classification, name, centroid position and area measurement for all known coastal wetlands of the Great Lakes basin. Hydrological modifiers imposing on each system are also identified. Hydrogeomorphology dictates wetland delineations per criteria developed by the Great Lakes Coastal Wetlands Consortium (GLCWC) working group and described in the Great Lake Commission's (GLC) Great Lakes Coastal Wetlands Classification First Revision (July 2003; original November 2001). This data is not intended for use finer than scale of sources used. The Inventory includes both a point, GLCWC_CWI and polygon coverage, GLCWC_CWI_pt. The orginial polygon layer was converted to a 30m gridded (by cell center) product by HGM Class 1 to work with the GLAHF framework.

Service Item Id: f7f03522f27d47e08046bbdf22da2db2

Copyright Text: The U.S.G.S, CWS-OR, MNFI and OMNR would like to acknowledge the Great Lakes Commission Wetland Constortium (GLCWC), Ohio State SeaGrant, and Mary Moffett, U.S. Environmental Protection Agency, Mid-Continent Ecology Division for their help in the acquisition of the primary wetland datasets used in this project. Also, thanks to Doug Wilcox and Martha Carlson, USGS Great Lakes Science Center, for additional wetland information. Funding was provided by the GLCWC.

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