Aspen prepared an Ecosystem Restoration Report under the Section 1135 program for a 27-acre portion of the Tucson (Ajo) Detention Basin in Tucson, Arizona. This project involved the modification of the detention basin in order to restore riparian and wetland habitat native to the Sonoran Desert. Aspen also prepared a design modification report when the restoration area was increased to 50 acres. Reclaimed water from a local sewage treatment plant will be utilized to support the restoration effort, allowing the creation of riparian, wetland, and open water habitat. The habitat restoration effort will be undertaken in conjunction with plans to develop the basin with recreational uses, including a bicycle/hiking trail and a public golf course.