(AUGUST 8, 2021) People like to take their dogs to the river. Some dogs play in the water. Some dogs drink the water. But Multnomah County has a warning. People should keep pets out of the Willamette River.
Why? There are toxic (poisonous) chemicals from algae. Algae is a type of plant in slow, warm water. The state found a lot of the toxic chemical in the water.
This chemical is not a problem for humans. However, it can kill dogs if the dogs drink it.