Recent lab results confirmed the presence of the cyanotoxin microcystin in Barry Creek, near the headwaters of the Mad River. However, the concentration in the water was below drinking water health advisory levels.

This harmful algal bloom is caused by algal mats. Cyanotoxin concentrations within algal mats can be high, while cyanotoxin concentrations in the surrounding water are low. Therefore, we recommend avoiding contact with algal mat material. Animals, especially dogs and livestock, that consume algal mats may be at risk of cyanotoxin poisoning. If you suspect a cyanotoxin related illness, contact a medical professional or veterinarian immediately, and email cyanoHAB.reports@waterboards.ca.gov.

For more information on how cyanotoxins can affect your livestock and for information to share with your veterinarian, go to https://mywaterquality.ca.gov/habs/resources/domestic_animals.html#faq_livestock.

For more specific information regarding potentially toxic algal mats, go to https://mywaterquality.ca.gov/habs/resources/benthic_education.html.

For other questions or needs for fire recovery call 623-8223 or visit .www.trinitycounty.org/Recovery.

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