IMPERVIOUS SURFACES 2001 (USGS) --
Impervious Surfaces, 2001 (30-meter Grid)
Shows estimated percentages of impervious surfaces.
This grid was produced in association with the 2001 National Land Cover Data (NLCD) set, Version 1 dated 09-01-2003, produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium.
FGDC metadata: IS2001USGS_IN