“…Opsahl, S.P., Musgrove, M., and Mecum, K.E., 2020, Temporal and spatial variability of water quality in the San Antonio segment of the Edwards aquifer recharge zone, Texas, with an emphasis on periods of groundwater recharge, September 2017-July 2019: U.S. Geological Survey Scientific Investigations Report 2020-5033, 37 p., https://doi.org/10.3133/ sir20205033.…”