These datasets depict land cover along a portion of the Rio Grande River within the Bosque del Apache National Wildlife Refuge in 1949, 1962, 1973, 1978, 1984, and 1986. The data were developed via photo interpretation of black-and-white aerial photography and Color-infrared (CIR) aerial photography at 1:3,580, 1:5,690, 1:6,000, 1:24,800, 1:25,000, or 1:58,000 scales.
U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.fort.usgs.gov/Products/GIS/GIS_abstract.asp
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