Land Cover analysis by Ward for Washington, DC examining the period from 2006 to 2015, in 5 year increments. These aggregated data by Ward represent detailed urban tree canopy cover in Washington, D.C. The source data were derived using remote sensing technologies on aerial imagery from the National Agriculture Imagery Program (NAIP), flown in July 2015, and aerial imagery and LiDAR data from Sanborn and the DC Office of the Chief Technology Officer, flown in April 2015.