Growing algal bloom prompts OHA warning for Lake Billy Chinook and Lake Simtustus
A preemptive health advisory has been issued for Lake Billy Chinook and Lake Simtustus due to the suspected presence of a harmful cyanobacteria algal bloom.
The Oregon Health Authority issued the advisory based partly on satellite data showing the extent of the bloom and its daily growth. Water testing over the coming days will either confirm the advisory or remove it.
Tests conducted at Lake Billy Chinook since 2015 show that blooms produce cyanotoxins above levels for recreational use for both people and pets.
While the advisory is in place, the health authority recommends people avoid swimming and high-speed water activities, including water skiing and power boating in areas of the lakes where blooms are present.
Toxins are not absorbed through the skin, but individuals with skin sensitivities may get a puffy, red rash, the health authority said. The major route of exposure is through ingestion of water. Toxins cannot be removed by boiling or filtering water with camping-style filters.
Exposure to cyanotoxins can cause symptoms similar to what one might encounter during a bout of food poisoning. Stomach cramping, nausea and vomiting are common symptoms. In more serious cases, affected individuals may suffer from numbness, tingling, dizziness and shortness of breath that could require medical attention
Jefferson County residents who draw in-home water directly from an affected area are advised to use an alternative water source.
Authorities said it’s still safe to visit the lake for fishing, camping, canoeing and kayaking. Boating is safe as long as speeds do not create excessive spray. Dogs can become extremely sick or die from drinking affected water. Care should be taken to prevent dogs from licking dried crust near the shore.
Eating fish caught where blooms are present also carries health risks. Those who decide to eat fish should remove fat, skin and organs before cooking or freezing. Filets should be rinsed with clean water.
For health information or to report an illness, contact the Oregon Health Authority at 971-673-0482 or visit OHA’s cyanobacteria blooms website.
