The Walnut Gulch Experimental Watershed, southeastern Arizona, USA, is in the Basin and Range Physiographic Province. Major geomorphic features of the watershed are results of tectonics, mostly long-term faulting, and erosion processes that have displaced and modified rocks ranging in age from Precambrian to Recent; included are the Dragoon Mountains, the Tombstone Hills, the Tombstone Surface, the Whetstone Pediment, and the drainage network of Walnut Gulch. Small-scale landforms of the watershed are individual hills, undissected remnants of alluvial fans (fan terraces), basin floors, alluvial fans, and recent alluvial sediment of stream channels, flood plains, and terrace-inset deposits.

Dataset documentation: https://www.tucson.ars.ag.gov/dap/Files/WG%20Geology%20Soils%20and%20Geomorphology.pdf