Lady Bird Lake was formed in 1960 by the construction of Longhorn Dam and then the Tom Miller Dam, built in 1939. The lake's purpose is a cooling pond for the Holly Street Power Plant and a recreatoinal spot for the city.
Recreational activities include the Lady Bird Lake Hike and Bike Trail, non-motorized boating (including the very popular row boats on the water), swimming, and fishing.
The lake is stocked with fish periodically. Fish species include, largemouth bass, catfish, carp, and sunfish, although caught fish have been ban from being consumed.