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News Release
Recreational use advisory issued for JC Boyle Reservoir Sept. 10 - 09/10/21

September 10, 2021

Contact: Jonathan Modie, 971-246-9139, PHD.Communications@dhsoha.state.or.us

Recreational use advisory issued for JC Boyle Reservoir Sept. 10

PORTLAND, Ore.—Oregon Health Authority (OHA) has issued a recreational use health advisory today for all of JC Boyle Reservoir due to the presence of cyanobacteria blooms and cyanotoxins above recreational use values for human exposure. The reservoir is located 16 miles west-southwest of Klamath Falls along Oregon Route 66 in Klamath County.

People should avoid swimming and high-speed water activities, such as water skiing or power boating, in areas of the lake where blooms are, as the major route of exposure is ingestion of water. Toxins are not absorbed through the skin. However, if you have skin sensitivities you may get a puffy red rash.

Everyone is encouraged to visit JC Boyle Reservoir and enjoy activities such as fishing, camping, hiking, biking, picnicking, and bird watching. Boating is safe as long as speeds do not create excessive water spray. Sprays could lead to the risk of inhaling cyanotoxins.

Drinking water

Drinking water directly from areas of the lake affected by a bloom is especially dangerous. Toxins cannot be removed by boiling, filtering, or treating water with camping-style filters. Contact campground or county park management or the local health department with questions about water available at nearby campgrounds or day-use areas.

Not all private treatment systems are effective at removing cyanotoxins. If you do not use a well or public water system and draw in-home water directly from an affected area you are advised to use an alternative water source.

Children and pets

Children and pets are at increased risk for exposure because of their size and level of activity. Dogs can get extremely ill and even die within minutes to hours of exposure to cyanotoxins by drinking the water, licking their fur, or eating the toxins from floating mats or dried crust along the shore. This is regardless of a recreational use health advisory in place.

Be aware that dogs can become ill and die from water intoxication after drinking excessive amounts of water while swimming or fetching objects for long periods of time. Intoxication is a potentially fatal disturbance in brain function resulting from an imbalance of electrolytes in the body. Water intoxication and heat stroke can cause similar symptoms as exposure to cyanotoxins.

Symptoms

Exposure to cyanotoxins can be serious and cause a range of symptoms. Symptoms may be similar to food poisoning such as stomach cramping, diarrhea, nausea and vomiting. Symptoms may also be more serious, such as numbness, tingling, dizziness and shortness of breath. These symptoms may require medical attention. Dogs can experience weakness, difficulty walking, seizures, lethargy, loss of appetite and more. If your dog exhibits symptoms veterinary treatment should be sought as quickly as possible.

Fishing

Fish caught from areas where cyanobacteria blooms are present may pose unknown health risks. Fat, skin and organs should be removed before cooking or freezing. Toxins are more likely to collect in these tissues. Fillets should also be rinsed with clean water.

For health information or to report an illness, contact OHA at 971-673-0482.

Learn more here.

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