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The aquifer's recharge zone, [7] where surface water enters the aquifer, follows the Balcones Fault line, from Brackettville (roughly along U.S. Highway 90), through San Antonio, and north to Austin along but a few miles west of Interstate 35. On certain stretches of highway in Austin and San Antonio, signs indicate that the driver is entering ...
The Comal Springs are fed by the Edwards Aquifer, a large karst aquifer that runs through most of central Texas. The aquifer consists of porous, water-bearing limestone features which channel rainfall and surface runoff from the aquifer's recharge zone down to various discharge zones, including the springs.
The creek begins in northern Hays County and flows 40 miles (64 km) east through Austin, draining into the Edwards Aquifer recharge zone in southwest Austin. [2] The stream then reemerges at Barton Springs and proceeds toward Lady Bird Lake (formerly Town Lake), where it joins with the Colorado River.
This results in a karst aquifer made up of limestone with large void spaces. Water then enters the aquifer and fills the voids. [4] All water discharging from Barton Springs originates as rainfall. Some of this rain falls directly onto the area of land where the aquifer limestone rock is exposed, which is known as the recharge zone.
The area is well drained; rainwater flows into the Edwards Aquifer recharge zone at the south of the plateau to feed rivers to the south. Rainfall varies from 15 to 33 inches per year, typically, from northwest to southeast, and the area has a moderate temperature and a reasonably long growing season.
This year, the system has seen an 850,000-acre-foot increase in water flowing into the river from the aquifer, 300,000+ acre-feet in aquifer recharge, a 400-500 cubic-feet-per-second increase in ...
Edwards Aquifer in Texas is important as a water supply aquifer and the source of major springs. This carbonate aquifer has historically been providing high quality water for nearly 2 million people, and even today, is completely full because of tremendous recharge from a number of area streams, rivers and lakes. The primary risk to this ...
Shoal Creek is the largest of Austin’s north urban watersheds, encompassing approximately 8,000 acres (12.9 square miles). About 27% of the watershed is over the Edwards Aquifer Recharge Zone. [1] Its length is approximately 11 miles. It runs parallel to and between Waller Creek to its east and Johnson Creek to its west.