For 25 years, the Edwards Aquifer Authority has been measuring the aquifer levels at 70...
Charles Crawford, data collection supervisor at the Edwards Aquifer Authority, checks a weather station on Wednesday, March 30, 2022, at the authority’s Field Research Park in far north San Antonio. In addition to well monitoring, the Aquifer Authority has rain gauges and full weather monitoring stations throughout the area they oversee.On the northeast side of San Antonio, in a conserved area of Bexar County, Chuck Crawford lowers a massive measuring tape into a deep well.
When J-17 drops below 660 feet, the Edwards Aquifer Authority begins monitoring a 10-day rolling average. If the average is below 660, the Edwards Aquifer Authority informs the San Antonio Water System, which advises the city to implement water restrictions. “It’s important for us to have a long history of data. It’s incredibly useful,” said J. Mark Hamilton, executive director of aquifer management services at the Edwards Aquifer Authority. “Not only for regulators but for the scientists and people trying to understand the system. We can see the drought of record in the 1950s and when San Antonio flooded in the early ’90s.”
There are three remote sensors in the J-17 well, which send data to the Edwards Aquifer Authority that is compared daily. Most wells have one sensor.
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