BISMARCK – The North Dakota Department of Environmental Quality cautions hunters to watch for potentially toxic blue-green algae, known as harmful algal blooms (HABs), in wetlands and lakes while in the field this fall, according to a news release.

Blue-green algae can produce cyanotoxins, which, if ingested, can cause severe health effects in dogs and humans.

Common side effects for humans exposed to water containing cyanotoxins include diarrhea, vomiting, numb lips, tingling fingers and toes, dizziness, rashes, hives, and skin blisters. Canine deaths, seizures, vomiting, and skin irritation have all been linked to these blooms. There are no known antidotes for cyanotoxins.

Blue-green algae can take many different forms. Beware of algae that looks like grass clippings floating in the water, clumps/puffballs, or green cottage cheese. Affected water may also appear as spilled green paint or green pea soup and is commonly bright green or turquoise in color.

The public is urged to be cautious and avoid waters that look discolored, scummy, or have a foul odor. Do not let pets swim in or drink from waters suspected of containing blue-green algae. Carry plenty of fresh water. If a hunting dog accidentally swims in water that might have an algal bloom, rinse off with fresh water as soon as possible.

Although Environmental Quality has concluded the HABs monitoring program for the recreational season (May 1 -to Sept. 30), residents can still view waterbody statuses on the HABs Story Map through Dec. 31 at www.tinyurl.com/WMP-HABS.