Benthic algae mats in Columbia River pose risks to people, pets

Find out why Clark County officials urge caution along the Columbia River this summer after toxic benthic algae mats killed a dog and surfaced at Cottonwood Beach. Learn how to spot and avoid them. https://clarkcountytoday.com/news/benthic-algae-mats-in-columbia-river-pose-risks-to-people-pets/ #ColumbiaRiver #AlgaeMats #PetSafety #ClarkCounty