July 13, 2021 - The Sierra National Forest (SNF) would like to inform visitors who hike to the Merced River at Hites Cove in Mariposa County, not to swim, wade or allow their pets to enjoy the water.

Due to Toxic Algal Mat for more information visit the Toxic Algal Mat FAQs web page

More Information:

After the California Department of Fish and Wildlife (CDFW) conducted water testing along the Merced River near Hites Cove as part of the wadeable streams assessment on 6/22/2021 and 6/23/2021 results show a high concentration of algae bloom.

While harmful algal blooms (HABs) are caused by algae or cyanobacteria that grow suspended in the water column (planktonic), some algae grow attached to the bottom (benthic zone) of water bodies and can form algal mats. Some species can produce toxins, and if present, can pose a risk to humans and pets

Source: SNF