Yosemite, CA – Yosemite National Park is warning visitors to stay out of Tenaya Creek due to toxic algal blooms, the area is east of where a family was found dead in Mariposa County.
The park has received positive results on recent testing for small amounts of toxic algae in Tenaya Creek in Yosemite Valley. And there may be more toxic algae existing in other sites in the valley, according to park officials. The problem, they explained, is that “toxins are concentrated within algal mats themselves and are released episodically into the water when the algae die or are disturbed.”
For that reason, the park is notifying visitors to beware and not enter or drink from the creek, which flows from above Mirror Lake to where it enters the Merced River near North Pines Campground. Also noting that “filtering and/or boiling the water is not effective against this type of algae.”
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Toxic Algae Found in Tenaya Creek