The dataset contains GPS survey data from two surveys conducted after a flow event on February 15, 2019, at the USGS continuous slope-area (CSA) gage 09484201 - Bear Creek above Bear Canyon Road, near Tucson, AZ. The CSA gage is located downstream from Pima County Regional Flood Control District ALERT gage 2184 - Bear Canyon Wash near Bear Canyon Rd. The first survey, on February 19, 2019, documents cross section geometry and high-water marks from the flow event and sensor locations in the CSA reach, as well as one high-water mark, a USGS bench mark, and the ALERT sensor at the ALERT gage. The second survey, on May 17, 2019, documents cross section geometry, an additional high-water mark, and the ALERT sensor at the ALERT gage. The surveys were performed using Leica GS14 RTK GPS equipment, S/N base-2806898, S/N rover-2806883.