The battle for Lake Austin continues: 6,000 sterile Asian grass carp were released into the lake this week in an effort to combat the invasive water plant hydrilla. That brings the total number of Asian grass carp stocked in Lake Austin to 11,000 this summer and 40,000 overall.
Hydrilla is a non-native aquatic plant that has spread rapidly in Lake Austin since it was first discovered in 1999. It grows to be very thick and can clog up pipes that carry drinking water from the lake. It can also cause problems for those who use the lake for recreation.
Mary Gilroy, an environmental scientist with the City of Austin, told KUT News earlier this year that if the plants get thick enough, they pose a danger to swimmers.