08/14/2025
Harmful algae bloom advisories for bodies of water throughout the state have been issued by Oregon Health Authority. Check our Web site for a list: https://www.oregonvma.org/toxic-algae-advisories
Note: The advisory in the graphic has been expanded to include the Willamette River from the Ross Island Bridge downriver to Wapato Bridge and Kelley Point Park.
Avoid contact with the water in these locations. Dogs can become extremely ill—and even die—within minutes to hours of exposure to cyanotoxins from drinking water, licking their wet fur, or eating floating mats or dried crust along the shore.
A toxic algae bloom can look foamy, scummy, thick like paint, and pea-green or blue-green in color. It can look like a thick green or brownish-red mat, or bright green clumps suspended in the water. If you find thick, brightly colored foam, scum or mats in a lake, pond, river or stream—especially in shallow, marshy areas where cyanobacteria blooms can form—don’t let your pet drink or swim in the water.
Check our Web site or Oregon Health Authority's site for the latest cyanobacteria advisories before heading out. And remember: when in doubt, stay out!
