Aquatic invasive species pose an ongoing threat to native species, the economy, recreation, and human health and safely. Many aquatic invasive species – including plants, fish, and mussels – can be accidentally transported when people go fishing and boating.
By following a few simple steps every time you leave the water, you can help prevent the spread of aquatic invasive species and protect the environment.
What are zebra mussels?
Adult zebra mussels are small — about the size of a sunflower seed — and are distinguishable by their brown and white zigzag shell pattern. They attach themselves to hard surfaces and have been known to adhere to plant stems.
Nebraska currently has five waterbodies with a known established population of zebra mussels:
- Offutt Base Lake
- Lewis and Clark Lake
- Missouri River
- Lake Yankton
- Beaver Lake
Negative impacts of zebra mussels
One adult zebra mussel can filter one liter of water per day, removing much-needed nutrients that other species rely on from the waterbody. This can negatively impact Nebraska’s aquatic ecosystems by starving the food chain from the bottom up. Zebra mussels also have the potential to clog pipes and drains, negatively impacting Nebraska’s irrigation, agriculture and economy. Additionally, zebra mussels can ruin a swimming beach with their sharp shells.
Clean, Drain, Dry… After every waterbody, every time.
CLEAN off visible aquatic plants, animals, and mud from all equipment before leaving water access.
- Rinse equipment and boat hulls (with high pressure, hot water when possible).
- Rinse interior compartments of boats with low pressure, hot water (120°F).
- Flush motor with hot water (120°F) for 2 minutes (or according to owner’s manual).
DRAIN motor, bilge, livewell, and other water containing devices before leaving water access.
DRY everything for at least five days OR wipe with a towel before reuse.
For ANGLERS, the additional step of DISPOSE is recommended:
DISPOSE of unwanted bait, worms, and fish parts in the trash. When keeping live bait, drain bait container and replace with spring or dechlorinated tap water. Never dump live fish or other organisms from one water body into another.
Together the three steps of Clean Drain Dry greatly minimizes the risk of spreading aquatic hitchhikers into new locations.
Cleaning will remove visible large-bodied organisms attached to or in watercraft or recreational equipment. Rinsing with water removes organisms, while hot water often kills them. Water at least 120°F is recommended; be sure to avoid contact with skin and check manufacturers’ recommendations to ensure equipment can withstand high temperatures. If hot water is not available or may cause damage, rinsing with tap water and completely drying will help prevent spread of aquatic invasive species. Draining removes small and nearly invisible organisms such as zebra mussel larvae (veligers) potentially entrained in water containing devices. Drying is necessary as many organisms can survive in standing water. The use of chemical prophylactics or disinfectants (e.g., bleach) are not recommended for treating watercraft and recreational equipment. Chemicals may damage equipment or components, cause environmental damage, harm human health. Chemical disinfectants may not be effective against many aquatic invasive species.
NPPD Zebra Mussel Prevention Tips Video
Loup Generator magazine featuring more invasive species to watch out for