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Federal government studies Columbia River in Washington, Shenandoah River in Virginia, Escalante National Monument in Utah and the American River in California for toxic algae.
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Toxic algae has been found in the Columbia River for the third week in a row in the Tri-Cities, Washington. Algae can be harmful to people swimming, ingesting or coming in contact with the water, as well as animals.
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Health officials are testing Tri-Cities, Washington drinking water twice a week for toxic algae since a half-dozen dogs were sickened or died recently after being on the Columbia River. And the rivershore is closed in Howard Amon Park in Richland. But toxic algae is a nationwide problem, and we still have much to learn.