|
June 24, 2025
Media contact: Timothy Heider, 971-599-0459, PHD.Communications@oha.oregon.gov
Recreational use advisory issued for Lost Creek Lake
PORTLAND, Ore.— Oregon Health Authority (OHA) issued a recreational use health advisory today for Lost Creek Lake. This is due to the presence of cylindrospermopsin. at OHA’s recreational use value. The lake is in Jackson County.
Cyanobacteria blooms, also known as harmful algae blooms, are naturally occurring. Some of these bacteria produce toxins that can cause serious illness in people, and illness or death in animals, which are more sensitive. Warm weather and nutrients in the water can cause bacteria to multiply rapidly, forming a “bloom.”
People should avoid swimming and high-speed water activities, such as water skiing or power boating, in areas of the reservoir where blooms are present, as the major route of exposure is ingestion of water. Toxins are not absorbed through the skin. However, those with skin sensitivities may get a puffy red rash.
OHA encourages people to visit Lost Creek Lake and enjoy activities such as fishing, camping, hiking, biking, picnicking, bird watching, canoeing, and kayaking. Boating is safe as long as speeds do not create excessive water spray. Sprays could lead to the risk of swallowing or 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. Drinking waters sources for the public campgrounds and public parks around Lost Creek Lake rely on groundwater wells that are not affected by the toxins from the blooms. They are required to meet public water system rules that assure safe drinking water.
If a residence draws in-home water directly from Lost Creek Lake, OHA advises use of an alternative water source. Not all private treatment systems are effective at removing cyanotoxins.
Children and pets
Children and pets are at increased risk for exposure because of their size and level of activity. Children’s size, play activities and less ability to prevent swallowing may increase their exposure. 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.
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. Other symptoms may include headache and skin rashes. 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, vomiting, diarrhea, and more. If a dog exhibits symptoms, veterinary treatment should be sought as quickly as possible.
People should alert health care providers if they or a family member are ill and may have been exposed to cyanotoxins. Pet owners should alert their veterinarians to suspected exposure if they seek care.
Fishing
Fish caught from areas where cyanobacteria blooms are present may pose unknown health risks, so OHA recommends not eating fish from those areas. Those who decide to eat the fish should remove fat, skin and organs 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, or visit OHA’s Cyanobacteria (Harmful Algae) Blooms website. You can report a bloom, human illness, or animal illness directly to OHA.
###
 You are subscribed to Oregon Health Authority News Releases. View all OHA news releases.
|
