@misc{indiciae9c8c1365ef35, title = {Land-Cover and Imperviousness Data for Regional Areas near Denver, Colorado; Dallas-Fort Worth, Texas; and Milwaukee-Green Bay, Wisconsin - 2001}, author = {James A. Falcone and Daniel K. Pearson}, year = {2006}, doi = {10.3133/ds221}, url = {https://pubs.usgs.gov/publication/ds221}, note = {Source identifier: ds221} }