PROTECT THE WATERS YOU LOVE
Clean. Drain. Dry.
Aquatic Nuisance Species (ANS)
What are
Aquatic Nuisance Species?
- Nonindigenous
- aquatic plants or animals
- that
- cause harm to native and desirable species
- or
- have a negative effect on aquatic habitats, the environment, or the economy of the state.
ANS News
Zebra Mussels Found at Smishek Lake (09/29/2025)
The Department has confirmed a reproducing population of zebra mussels in Smishek Lake.
Smishek Lake is now considered a class 1 infested waterbody. No water, including bait water, can be taken away from the lake.
Other recommendations for water recreationists include:
- Avoid mooring watercraft in the lake, which gives mussels time to attach to your boat.
- Clean – remove plants, animals and excessive mud prior to leaving a water access.
- Drain – drain all water prior to leaving a water access.
- Dry – allow equipment to dry completely before next use.
- All docks, lifts and related equipment must be dried and left out of water for at least 21 days before being placed in another water.
- Consider Decontamination. Hot water kills zebra mussels. Use 140+ F degree water for 10 seconds contact time on the outside of your boat and 120+ F water on internal compartments for 2 minutes contact time.
ANS Regulations and Reporting
Learn North Dakota's ANS
rules and regulations.
Discover what species are classified
as ANS in North Dakota.
Report ANS
sightings.
North Dakota High Risk Waters
The following aquatic nuisance species are known to be in at least one water body within North Dakota:
Protect North Dakota Waters from Aquatic Nuisance Species
Clean.
Remove all plants, animals and mud from all equipment.
Drain.
Empty water from baitwells, bilges, motors and other equipment.
Dry.
Dry equipment before using in a different water body.
Every Time.
