2011 Map of South of Sentinel

About this map

Tenmile Wash dominates this arid landscape south of Sentinel, carving a complex drainage network across the desert floor of Maricopa County. This 2011 survey by the U.S. Geological Survey illustrates the stark hydrological patterns of the region, where ephemeral watercourses define the topography. The map's detail focuses on the subtle contours of the basin, showing how numerous small tributaries converge into the primary channel of the wash as it trends toward the northwest. For those studying the environmental history or physical geography of southwestern Arizona, the sheet provides a precise record of the drainage patterns and desert terrain before modern development or significant shifts in the local water table altered these ancient desert landmarks.