People say we need to keep Comal and San Marcos Springs flowing because of endangered species. The Comal River population of the fountain darter was completely eliminated by the 1950's drought when the river was reduced to isolated pools of water. The species was reintroduced using individuals from another population in San Marcos, where the Springs never dried up completely. Water enters the Aquifer easily in the recharge zone, but the subsurface drainage is generally inadequate to hold all the water that falls in large rain events. Recharge conduits and sinkholes quickly become filled and the remaining water has to flow over the surface.
Flash floods are the result.
US Geological Survey 18th Annual Report, pt. It had previously been known as Caprina limestone. That name was abandoned because it is a paleontologic term and geologists prefer that rock formations have geographic names. The Edwards Plateau was named after Edwards county, which was organized and named in 1883. And Edwards county was named for Hayden Edwards, who lived in Nacogdoches in east Texas.