Toxic algae found at 10 sites on Lake Travis; pet owners urged to keep dogs out of Highland Lakes

Blue-green algae was identified within Lakeway City Park. (Amy Rae Dadamo/Community Impact Newspaper)
Blue-green algae was identified within Lakeway City Park. (Amy Rae Dadamo/Community Impact Newspaper)

Blue-green algae was identified within Lakeway City Park. (Amy Rae Dadamo/Community Impact Newspaper)

Blue-green algae harmful to dogs has been identified in 10 locations around Lake Travis, according to a March 12 update from the Lower Colorado River Authority.

Algae samples taken by LCRA on March 3 revealed the presence of cyanotoxins—a toxic material released by a blue-green algae bloom—at 10 areas throughout the Highland Lakes chain.

Dihydroanatoxin-a, a form of cyanotoxin was identified in algae stemming from Arkansas Bend Park, Bob Wentz Park, Comanche Point, Cypress Creek Park, Lakeway City Park, Mansfield Dam Park, Pace Bend Park, Sandy Creek Park, Tom Hughes Park and Travis Landing.

Water samples taken from Bob Wentz, Sandy Creek and Arkansas Bend Park also tested positive for lesser levels of the cyanotoxin.


Tests were conducted following reports made in February that two dogs died and five others became ill after swimming in the Hudson Bend and Comanche Point areas of the lake.



“We can’t stress this enough—out of an abundance of caution, do not let your dogs touch or ingest algae from the lakes. We know even a little toxicity from blue-green algae can be harmful or even fatal to dogs.” said John Hofmann, LCRA executive vice president of water.

Since the initial reports were made, LCRA reported it has not received any reports of dogs becoming ill.

This week additional water and algae samples will be taken from other areas throughout the Highland Lakes, according to LCRA.

By Amy Rae Dadamo
Amy Rae Dadamo is the reporter for Lake Travis-Westlake, where her work focuses on city government and education. Originally from New Jersey, Amy Rae relocated to Austin after graduating from Ramapo College of New Jersey in May 2019.


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