The Spook Hill Area Drainage Master Plan (ADMP), completed in 2002, identifies regional flood control infrastructure necessary for a 35-square-mile area located in northeast Mesa. The ADMP watershed extends from the Usery Mountains on the north and the Apache Trail on the east, to the Buckhorn-Mesa structures on the west and south. The ADMP improvements, consisting of detention basins, channels and storm drains, have been endorsed by District and City staff, and has received public support from the residents of the area. The McDowell Road Basin and Storm Drain features, identified in the ADMP, include a 100-year detention basin at the corner of Sossaman Road and McDowell Road, and a storm drain along McDowell Road from Hawes Road to Sossaman Road. The completed project is maintained by the City (in incorporated areas) and the District (in unincorporated areas).