U.S. Geological Survey Open-File Report 2005-1249, Coastal Change-Potential Assessment of Sleeping Bear Dunes, Indiana Dunes, and Apostle Islands National Lakeshores to Lake-Level Changes, Figure 6A.

Coastal Change-Potential Assessment of Sleeping Bear Dunes, Indiana Dunes, and Apostle Islands National Lakeshores to Lake-Level Changes
USGS Open-File Report 2005-1249

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Figure 6A. Lakeshore geomorphology for Apostle Islands National Lakeshore. The colored shoreline represents the variations in coastal geomorphology within the park. High change-potential geomorphology includes gravel and sand beaches not immediately backed by bluffs. Moderate change-potential geomorphology consists of alluvial fans and sand beaches backed by bluffs. Low change-potential geomorphology includes medium bluffs and rock outcrops.

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