Casey Trees was created in 2001 with a grant from philanthropist Betty Brown Casey. Following a 1999 Washington Post article with a satellite imagery analysis from
American Forests, finding that the "District of Columbia...lost 64% of its tree cover from 1985 to 1997," Mrs. Casey was moved to establish an organization that would work to restore the tree cover of the District of Columbia. Casey Trees' first major initiative in 2002 was to inventory all of DC's street trees. Over 500 volunteers and 35 university student interns conducted a comprehensive GIS inventory of 106,000 street trees and 25,000 empty planting spaces. These findings were used by the Urban Forestry Administration to establish street tree planting goals, priorities, and maintenance needs. The information was also used to develop an online tree map which allows residents to view the data. ==Programs==