Stockton's McLeod Lake turned pink this week, as scientists dumped dye in the hope of figuring out why there are toxic algal blooms some years but not others.
Stockton’s McLeod Lake is looking pretty in pink this week. The splash of color is part of a study being conducted by the California Department of Water Resources, which is dumping pinkish dye into the water to figure out why the lake has become a hot spot for harmful algae. Hazardous algal blooms, which can be toxic to humans, pets and aquatic life, popped up in McLeod Lake in 2020 and 2022 but — curiously — not this year.
video showed the blue-green water turning a stark shade of purplish-pink as crews used long poles to distribute the dye evenly at different depths. The blue-green algae, known as cyanobacteria, is a natural part of the ecosystem but can rapidly grow under certain conditions, including warm temperatures and calm water. When the algae “blooms” so quickly, it can produce toxins leading to loss of appetite, vomiting and even jaundice and hepatitis for swimmers.
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