Zebra mussels were confirmed in the lower end of Lake Oahe in South Dakota in December 2023 by South Dakota Game, Fish and Parks staff.

As a result, the North Dakota Game and Fish Department is working closely with South Dakota to monitor the colonization of mussels in Lake Oahe during the 2024 open water season, according to Ben Holen, Game and Fish Department aquatic nuisance species coordinator.

“The nearest mussel that was found last year was over 100 lake miles south of the North Dakota border, so we will utilize various early detection techniques to track the leading edge of the zebra mussel population as it establishes up the lake,” Holen said.

In addition to monitoring efforts, the Department will launch a digital marketing campaign and will work with the North Dakota Department of Transportation to place highway signage to raise zebra mussel awareness and promote compliance with ANS regulations, Holen said. Also, expect a higher game warden presence along Lake Oahe this year.

“It is critically important that water recreationists comply with ANS regulations and remember to clean, drain, dry all watercraft and equipment between every use,” he added.

Lake Oahe recreationists and others can find facts about zebra mussels, ANS regulations and decontamination tips at https://gf.nd.gov/ans.