NLCD & EnviroAtlas %IC for selected metropolitan areas
Several files of percentage impervious cover (%IC) from 30-m and 1-m data.  The individual files contain %IC for different spatial support units. 

This dataset is associated with the following publication:
Wickham, J., S.V. Stehman, and M. Mehaffey. Accuracy assessment of NLCD 2011 percent impervious cover for …