Texas summers are so hot that in many West Texas reservoirs, more water evaporates than gets used by people. In 2011, more water evaporated out of Lakes Travis and Buchanan in Central Texas than was used by their largest city customer, Austin.
So what about storing water underground — in manmade reservoirs?
More Texas communities are exploring the idea, which has found traction in states like Florida and California, and Texas lawmakers have introduced legislation to help it along. The basic concept of the technology — which is awkwardly named aquifer storage and recovery, or ASR — is to inject water into an aquifer for storage, hundreds of feet down, and pump it back up when it is needed. Proponents say that the technology reduces evaporation, is cheaper and faster to build than surface reservoirs, and avoids some of the issues associated with flooding land.