Unhealthy levels of algae at Lost Creek Lake today prompted state public-health officials to issue an advisory against water contact at Jackson County's largest water-body.

Unhealthy levels of algae at Lost Creek Lake today prompted state public-health officials to issue an advisory against water contact at Jackson County's largest water-body.

The voluntary advisory is the second this year at the U.S. Army Corps of Engineers facility along the upper Rogue River near Trail.
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A similar outbreak lasted two weeks this summer. But a bloom of anabaena flos-aquae that began in September 2008 lasted four months.

This strain of blue-green algae, which is actually a bacteria, produces toxins when it dies. The toxins are dangerous to people and pets if ingested or inhaled.

Corps rangers began posting the advisory signs this morning.

Jim Buck, the Corps' project manager, says the recent deaths of dogs that ingested algae-infected water along the Umpqua River near Elkton "absolutely" has heightened awareness among his agency and the public over the dangers of this algae.