The Colorado River and Highland Lakes
At 862 miles, the Colorado River is the longest river entirely within Texas. LCRA’s water service area includes roughly the lower 600 miles of the river from the Hill Country to the Texas Gulf Coast.
The Highland Lakes section of the river is in the Hill Country northwest of Austin. The lakes were created to help manage floods, to create hydroelectric generation and to capture water when it rains to ensure the region has a reliable water supply during dry times. LCRA manages the Highland Lakes and Colorado River as a system to supply water for more than a million people, as well as businesses, industries, the environment and agriculture in the lower Colorado River basin.
How full are the lakes?
Dams and lakes
Information on the six Highland Lakes and dams
Hydromet & weather conditions
Interactive map and reports on rainfall and more
Navigating the Highland Lakes
Regulations and tips for safe boating, swimming
Lower Colorado River basin
From the Hill Country to the Texas Gulf Coast
DATA AND RESOURCES
River Operations Report
Daily report on routine water supply operations at the dams.
Flood Operations Report
As needed report on emergency flood operations at the dams.
Inflows into the Highland Lakes (.pdf)
March 2021 inflows totaled 15,286 acre-feet – about 17% of the monthly average.
Current lake level information.
Basin streamflow summary
Current streamflow data in the basin.