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Historic Lake Superior shorelines near Odanah, Wisconsin (1852 - 2013)

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U.S. Geological Survey2019-01-01 更新2026-04-23 收录
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https://www.sciencebase.gov/catalog/item/5c9e410ce4b0b8a7f62f5ba0
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This USGS data release presents historic shorelines of Lake Superior near Odanah, Wisconsin encompassing the delta complex of the Bad River from 1852 to 2013 compiled in a Geographic Information System. The coverage of the shorelines starts approximately 8 km northeast of Ashland and extends for about 40 km to approximately 3 km east of the Bad River mouth. The shorelines were derived from land survey maps, topographic maps (USGS), and aerial photographs. The data set includes 10 shorelines for the years 1852, 1934, 1939, 1953, 1963, 1979, 1986, 1992, 1999, and 2013. Detail in the initial years of the shorelines (1852, 1934) may appear to be coarser having been hand drawn. Following 1939, all the shorelines were created using available aerial photographs. The exact position of the shoreline was dependent on lake levels, which varied over the years spanned by the different sources.
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2019-01-01
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