Waterfowl hunters should watch for harmful algal blooms while hunting around Utah

SALT LAKE CITY — Many of Utah’s waterfowl hunts opened on Oct. 5 and 12, and hunters are getting out on the water across the state to harvest migrating geese and ducks. While they are prepared with decoys, dogs and ammunition, some hunters may not be as prepared to recognize and avoid harmful algal blooms on some Utah waterbodies.

There are 30 waterbodies still under warning advisories across Utah. On October 31, the Utah Division of Water Quality (DWQ) will stop monitoring for harmful algal blooms as temperatures continue to decrease, and weather conditions worsen during fall and winter. However, despite some notions that harmful algal blooms only occur during hot summer weather, they can actually persist throughout the fall and winter and continue to pose a potential threat to humans and pets.

“Most active advisories will be lifted by the end of the month, and signs and website posts will be removed,'' Kate Fickas, harmful algal bloom program coordinator for DWQ, said. “However, it’s essential to know that these blooms can continue in colder weather. People should know what to look for, and when in doubt, keep your pets out.”

Blooms form when naturally occurring cyanobacteria, also known as blue-green algae, multiply to high densities and form visible water discoloration, scum, and mats. Harmful algal blooms can look like pea soup, spilled paint, grass clippings or water that has a green or blue-green hue.

Cyanobacteria can produce three kinds of toxins: liver, nerve and skin toxins. If you suspect a harmful algal bloom in the water, stay out of the water and avoid any contact with water or scum. Be sure to clean waterfowl and any fish well and discard all guts.

Hunters should also keep their dogs away if they suspect a harmful algal bloom, as the toxins have proved to be fatal in pets. Dogs can be exposed to toxins by skin contact with water that is contaminated with cyanobacteria or toxins, when swallowing water or by licking the water off their fur or hair.

If you suspect your pet has been exposed to a harmful algal bloom, seek immediate care from your veterinarian. Even with proper veterinary care, most exposures are fatal. Prevention is the best way to protect your pet.

Find more information about harmful algal blooms at habs.utah.gov.