A health advisory has been issued for Blue Lake due to a blue-green algae bloom.
Blue Lake is located just outside Wood Village north of Interstate 84 in Multnomah County.
The lake has been closed to swimming, wading and fishing.
Test results on water samples are expected to be available by next week. At that time, depending on the level of toxins found in the sample, health officials will determine if the advisory can be lifted.
Oregon Public Health officials advise people that swallowing or inhaling water droplets as a result of swimming or high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified.
Drinking water directly from a lake where a bloom is identified is especially dangerous. Exposure can produce symptoms similar to food poisoning.
No public drinking or potable water systems are affected.
Blue Lake Park remains open for activities such as bird watching and boating at low speeds, but any activities that might cause ingestion of water from the lake should be avoided.
For more information, or to report a human or pet illness, contact the Oregon Health Authority at 971-673-0400.
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