The Oregon Health Authority lifted its 108-day-long blue-green algae advisory at Lost Creek Lake Monday after confirming reduced levels of algae and associated toxins.
The state issued its health advisory Sept. 13 when it discovered high levels of anabaena flos-aquae in the lake, created by William L. Jess Dam, 30 miles northeast of Medford on the Rogue River.
The state said the reduced levels are not likely to be harmful to humans and animals.
Since 2010, mid-September blue-green algae blooms have lasted at least until late December, with two lingering into the new year, according to Oregon Health Authority statistics.
Last year's bloom triggered a Sept. 18 advisory that lasted 128 days before it was lifted Jan. 24.
Oregon health officials advise people who use Oregon water bodies for recreation to always be alert to signs of algae blooms. People and pets should avoid contact if the water is foamy, scummy, thick like paint, pea-green, blue-green or brownish red in color, or if a mat of algae is visible in the water.