To determine aquifer properties in the San Antonio Creek Valley watershed (SACVW) single well air and physical slug aquifer tests were conducted on seventeen monitoring wells at nine sites beginning on August 7 2017 and ending on August 13, 2017 . For all tests either a physical or air slug was used based on the distance of the groundwater level from the perforated interval of the well. A physical slug was used if the distance from the groundwater level to the top of the perforated interval was less than seven feet (ft); otherwise an air slug was used. above the screened interval than a physical slug was used. Physical slug tests were used in order to produce enough change in groundwater levels to adequately characterize the hydraulic conductivity, but without losing air to the aquifer which would significantly affect the outcome and interpretation of the test. Aquifer slug tests were conducted in order to estimate the hydraulic conductivity of aquifer units within the SACVW. The perforation intervals of the 17 monitoring wells in which aquifer slug tests were conducted varied between 45 ft below land surface and 940 ft below land surface providing a range of aquifer zones to study.
