The real time data offered on this web site is provisional and not representative of the official daily reading reported by the Edwards Aquifer Authority. Water levels, as recorded at the Bexar County Index Well (J-17), are provided here in 15-minute intervals and are subject to qualitative review by the Edwards Aquifer Authority.
The Edwards Aquifer Authority is solely responsible for determining and reporting official readings at the Bexar County Index Well based on each day's highest water level recorded between the hours of 12:00 a.m. and 8:00 a.m. The Authority uses this information for official historical reporting and for determining and enforcing groundwater reductions during periods of high aquifer demand and/or drought.
Real Time Level for the Bexar County Index well (J17) on 12/12/2013