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Great Lakes Wetlands, 1940ish

Dates

Start Date
1937-01-01
End Date
1950-12-31

Citation

Strassman, A.C., 2020, Great Lakes Wetlands, 1940ish: U.S. Geological Survey data release, https://doi.org/10.5066/P9NWCGLZ

Summary

Coastal and estuarian wetlands in the Great Lakes Basin are increasingly impacted by habitat degradation, invasive species, and most recently (late 2010's), increased water levels. These wetlands act as an important buffer between the open lake and the near-shore areas, as key areas for nutrient cycling, as critical nurseries for many species of lake fish, and as habitat for numerous species of concern. Understanding how the cover and composition of these wetlands has changed over time is critical to making informed management decisions. By using both historical documents and imagery, multiple historic maps of wetland coverage were created in GIS to compare over time and to current maps and imagery of these critical wetlands.

Contacts

Attached Files

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Shapefile: Great_Lakes_Wetlands_1940ish.zip
Great_Lakes_Wetlands_1940ish.dbf 105.47 KB
Great_Lakes_Wetlands_1940ish.prj 424 Bytes
Great_Lakes_Wetlands_1940ish.sbn 3.85 KB
Great_Lakes_Wetlands_1940ish.sbx 164 Bytes
Great_Lakes_Wetlands_1940ish.shp 2.47 MB
Great_Lakes_Wetlands_1940ish.shx 3.37 KB
Great_Lakes_Wetlands_1940ish.CPG 5 Bytes

Purpose

The objectives of this project were to: (1) create rectified, GIS-ready data layers of the historic wetland maps found in the USFWS publication Fish and Wildlife Resources of the Great Lakes Coastal Wetlands within the United States (Herdendorf et al., 1981) and (2) create rectified, GIS-ready data layers of the current wetland habitat at sites with maps in the noted publication.

Additional Information

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