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Portland District

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News Release

Release Number: 06-083
Dated: 6/21/2006
Contact: Jennifer A. Sowell, 503-808-4510

Algae bloom in Lost Creek Lake prompts testing of water, posting of advisories

PORTLAND, Ore. - In response to an algae bloom observed in Lost Creek Lake, park rangers have posted advisories to inform the public about blue-green algae and its possible health risks, the U.S. Army Corps of Engineers announced today.

The algae bloom was noticed near the Takelma Recreation area, a popular recreation site on the north side of the lake. The Corps is working with state health officials to collect samples and conduct tests to determine the species of the algae.

The posted alerts give some general information about blue-green algae, as well as recommendations for visitors to stay out of water where algae blooms are noticeable. Because some species of blue-green algae are known to produce toxins, water from the affected area of the lake will be tested to determine whether the species of algae present is toxic, and if so, what level of toxicity the algae contains.

If toxins are present they could be absorbed if affected water is swallowed, through prolonged contact with the skin or when inhaled as droplets or spray in the air. Usually, a dangerous bloom is associated with a distinct blue-green or pea green color and cloudiness in the water.

Blue-green algae are plants that occur naturally in lakes due to warm water collecting in calm, nutrient enriched areas, such as coves. Algal blooms are rapid buildups of algae that are often found near the shore due to wind and waves, and are visible as masses of green, yellow or bluish-green slime. Lost Creek Lake typically has mild algal blooms in the early to mid-summer months.

Water containing visible algae blooms should be avoided. Do not use the water for swimming, cleaning, cooking or drinking, and do not let your pets drink or access the water. Other activities near the water such as camping, hiking and biking are safe.

For more information, visit the Oregon Department of Human Services website at http://www.oregon.gov/DHS/, or contact them at (917) 673-0429. For local conditions call the U.S. Army Corps of Engineers’ Rogue River Basin Office at (541) 878-2255.

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Content POC: Public Affairs Office, 503-808-4510 | Technical POC: NWP Webmaster | Last updated: 2/9/2006 9:38:06 AM

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