How Dams Work

Floods/Dam Management

How Dams Work (Windows Media)
How Dams Work (Real Media)


Tom Miller Dam, which holds Lake Austin's water, is the last of the dams along the chain of Highland Lakes above Austin.


Wirtz Dam creates Lake LBJ, which also takes in water from the Llano River during flood events.


Water from a swollen Lake Marble Falls flows over Starcke Dam during a severe flood.


Starcke Dam is the fourth dam down the chain of Highland Lakes northwest of Austin.


Buchanan Dam has 37 floodgates, but LCRA has never had to open all of them at one time.


Lake LBJ was created by the construction of Wirtz Dam.


LCRA employees provide regularly updated information to the public through a hotline during flood events.


Buchanan Dam creates Lake Buchanan, one of two water supply reservoirs in the Highland Lakes chain.


An LCRA service area map shows the location of data-collection services along the Colorado River and its tributaries.


Wirtz Dam was built to create Lake LBJ, which serves as a source of cooling water for LCRA's Ferguson Power plant.


Starcke Dam, originally named Marble Falls Dam, was renamed in 1962 for Max Starcke, LCRA's second general manager.


Mansfield Dam, which creates Lake Travis, is the only flood control structure in the Highland Lakes system.


Water rises quickly in low-lying areas.


Employees at LCRA's River Operations Center monitor rainfall and streamflow data continuously during flood events.



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