The Bureau of Land Management sponsored this report on the history of ecological change in Aravaipa Canyon and adjacent lands in order to gain a better understanding of alterations in the study area's natural environment and of the reasons for which it came to be in its present condition. The report attempts to record a century of land change and resource use along with the decisions and thought processes of the individuals and agencies which shaped Aravaipa's landscape. Before the initiation of this study, as old-timers from "the Aravaipa" passed away and documents were lost or discarded, the history of formative natural events (floods and freezes), the stories of individual family land use and residents' changing attitudes, the history of influential outsiders and government agencies were slowly disappearing. Fortunately, this report has preserved some of this valuable information.