Hoffmann, J.P., Ripich, M.A., and Ellett, K.M., 2002, Characteristics of shallow deposits beneath Rillito Creek, Pima County, Arizona: U.S. Geological Survey Water-Resources Investigations Report 01-4257, 51 p., 3 sheets, various scales. Authors Hoffmann, J.P., Ripich, M.A., and Ellett, K.M. Publication Date 2002 Citation U.S. Geological Survey Water-Resources Investigations Report 01-4257, 51 p., 3 sheets, various scales. State AZ Province BR County PM Placenames Tucson Basin Basins Tucson Ama Tucson Ama-Usc Watersheds Santa Cruz River Keywords Aquifer Recharge Alluvium More Keywords Aquifer, Recharge, Alluvium, AzGeoBib RefNum 23119