National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 4, Southeast United States: IMPV01_4
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 into four tiles to facilitate 
timely display and manipulation within a Geographic Information System, browse graphic: 
nlcd01-partition. The National Land …