Serving Montana Agriculture and growing prosperity under the Big Sky

Aquatic Invasive Species Program

Aquatic Noxious Weed Program

Boat CheckInvasive weeds threaten the ecological integrity of aquatic environments in Montana. Eurasian watermilfoil, curly-leaf pondweed and flowering rush have become established in the state, and there is a high risk of invasion by other non-native aquatic plants.

These plants are highly competitive and affect fisheries, native plants, waterworks, power generation and irrigation. Increased aquatic plant biomass also impacts water quality and recreational resources.

Invasive aquatic plants are transported by hitching a ride on animals, watercraft and recreational vehicles, as well as scuba, fishing and hunting equipment.


Click Here for the FWP Aquatic Invasive Species Website 

How can you help?

Boating

Before launching and before leaving:

  • Inspect boat, trailer, and equipment.
  • Remove aquatic plants, animals, and mud.
  • Drain water from boat, motor, bilge, live wells, and bait containers.
  • Spray/rinse boats and recreational equipment with high pressure, and/or water above 140 degrees, or let recreational equipment dry for at least five days.
Fishing
  • Clean waders and boots.
  • Drain water from bait containers.
Hunting & Other Outdoor Activity
  • Inspect equipment, decoy lines, anchors, waders and pets.
  • Remove weeds/seeds by washing equipment and brushing or cleaning animals.

Montana Aquatic Noxious Weeds

Other Aquatic Plants of Concern in Montana

Guide to Montana's Freshwater Aquatic Plants

Click on the items below to download the complete guide or parts, meant to help with identification of Montana's freshwater aquatic plants.

Montana Pollutant Discharge Elimination System

State requirements regarding discharge permits have changed. Please visit the Montana Department of Environmental Quality website for information.

Aquatic Pesticide License

Application of aquatic herbicides in Montana requires a special-use license. The Montana Department of Agriculture oversees the licensing and training of aquatic pesticide applicators. Applicators who intend to treat waters with state restricted-use aquatic herbicides (xylene or acrolein) must attend a special aquatic training session and pass an Aquatic Pest Control Exam for initial certification. Training and testing is offered once a year by the Department.

The Department conducts aquatic herbicide applicator recertification training sessions periodically. These are listed with other applicator training opportunities on the Pesticides page.


More Information About Pesticide Licensing


Return to the Main Noxious Weeds Page