Q: Are the bacteria levels in the Highland Lakes low enough now so that it’s safe to go swimming?

A: Even though the bacteria levels in the Highland Lakes rose significantly during mid-summer flooding, bacteria levels in all the lakes have returned to pre-flood conditions. As you might suspect, over the years we have observed that bacteria levels increase dramatically after the water level rises significantly as it does during a flood. It usually improves seven to 10 days after flooding.

But keep in mind that swimming in a river or lake always carries some risk. Though the water quality of the lakes is tested regularly, water samples only provide a snapshot of bacteria levels at the time and location the sample was collected. Lake levels vary widely, lake conditions can change quickly, and the absence of a positive test for bacteria does not mean the water is free of bacteria that may cause infections.

Always take precautions when swimming and boating on the lakes. Avoid stagnant water and areas of the lake that accumulate debris. In particular, stay away from floating debris that looks like mulch.

Q: What is the schedule for lowering Lake LBJ, Lake Marble Falls and Inks Lake so that lakeside residents can repair their boat docks and other property? When will LCRA lower Lake Austin again?

A: According to the LCRA lake-lowering policy, the earliest that LCRA might lower Lake LBJ for reasons (other than an emergency) would be sometime in 2009. The last such lowering was in 2005. LCRA guidelines allow for lake levels in Inks Lake and lakes LBJ and Marble Falls to be lowered every four years. Inks Lake was last lowered in 2006, and Lake Marble Falls was lowered in 2004. At this time LCRA is not planning to lower any of the lakes. LCRA will announce plans for lowering the lakes on its Web site and through local news media.

 LCRA lowers Lake Austin at the request of the City of Austin, which has jurisdiction over the lake. Typically, the city requests the lake to be lowered to help control the growth of aquatic nuisance plants, such as hydrilla. Lake lowerings are not on an automatic schedule; LCRA and the city determine the need on a year-to-year basis. Once LCRA and Austin agree to a schedule, LCRA will announce plans to lower the lake on its Web site and through local news media.

Q: Where on LCRA’s Web site can I find information on LCRA’s extensive Hydromet system?

A: Click to follow LCRA meteorologist Bob Rose as he explains how to use the Hydromet information.

Have a question about LCRA or its operations, facilities and programs?
E-mail your question to ASKLCRA@lcra.org.

Although water quality on the lakes is tested regularly, it is still a good idea to be cautious.

Debris left behind after recent
drought-breaking flood.

Residents were eager to get back in their
houses to assess the damages.