Lovelady well height: 531 ft-msl (123 ft- Depth to Water)
Barton Springs: approximately: 100+ cfs 10-day average
Heavy rains late last week and throughout this
week deposited a significant amount of water along the I-35 corridor, averaging
8.3 inches among Austin, San Marcos and Wimberley. These rains, and subsequent
creekflow, have led to a significant pulse of recharge to the aquifers.
District staff anticipated the surge and prepared Antioch by calibrating all
instruments in use and shutting both intake valves before the storm arrived. Onion
Creek at Buda reached a peak stage of 23.2 ft (8 ft above flood stage level)
early Saturday (5/4) morning.
As seen on the graph below, Antioch’s automatic
valve successfully opened at 10:30am Sunday (5/5) when flooding subsided and
turbidity levels measured below 50 NTU. This allowed desired inflow where an
acoustic doppler velocimeter took measurements of up to 10 ft/s inside the 36”
intake pipe. This equates to 70 cfs or 31,400 gpm. On Monday 5/6, staff opened the
manual valve to increase the amount of recharge into Antioch cave. Staff
continue to monitor rain patterns and prepare Antioch for best management
practice.
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