1977 DEM for Sleeping Bear Point at Sleeping Bear Dunes National Lakeshore
This raster dataset describes elevation values, in meters (m), in Sleeping Bear Dunes National Lakeshore in 1977. The 1977 DEM was produced from historical aerial imagery acquired on April 30, 1977 at a flying height of 8,500 ft (1:17,000). Structure from motion (SfM) analysis of this imagery produced a 0.89 m DEM, …