Labor Day weekend is traditionally the last big three-day weekend to enjoy the lake, but you won't be able to dip your toe in Lake Texoma.
The U.S. Army Corps of Engineers has ordered that Lake Texoma is off limits to people and pets after tests revealed toxic blue green algae in the lake that borders Texas and Oklahoma.
Corps spokesman Ross Adkins said Wednesday the tests show a particularly dangerous kind of algae that is generally found several feet below the surface and hard to spot.
Adkins says the no-contact warning applies to the entire lake.
He says boating will still be allowed, but he urged boaters to keep their speed low to minimize the chance of ingesting spray from lake water.
Warning signs posted around the Texas and Oklahoma sides of the lake warn that anyone who comes in contact with the harmful algae should "call your doctor or veterinarian if you or your animals experience nausea, vomiting, diarrhea, skin rash, eye irritation, respiratory symptoms or other unexplained illness."
Water officials say prolonged heat and steady sunlight have created ideal conditions for algae blooms this year. Zebra mussels have also been found in Lake Texoma.