Oregon officials lift toxic algae warning for Portland river

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Oregon officials lift toxic algae warning for Portland river

By Courtney Sherwood PORTLAND Ore. (Reuters) - The dangerously toxic blue-green algae that for two weeks halted recreation on the Willamette River as it flows through Oregon's largest city has dissipated and a health advisory for the river has been lifted, Oregon public health officials said on Thursday. But swimmers and boaters should still be cautious as they return to the river, as algae could be present in high levels in areas far from where test samples were collected, the Oregon Health Authority said. An oil-slick-like green sheen of algae was first detected on Sept. ...

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