https://www.usgs.gov/publications/national-land-cover-database-2001-nlcd01-imperviousness-layer-tile-3-southwest-united
National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 3, Southwest United States:...
This 30-meter resolution data set represents the imperviousness layer for the conterminous United States for the 2001 time period. The data have been arranged...
https://catalog.data.gov/dataset/national-land-cover-database-2001-nlcd01-imperviousness-layer-tile-1-northwest-united-stat
Department of the Interior - National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile...
This 30-meter resolution data set represents the imperviousness layer for the conterminous United States for the 2001 time period. The data have been arranged...
department of the interior