There are 21 major species of noxious weeds (invasive) on the Black Hills National Forest in western South Dakota and northeastern Wyoming.
DOI. Bureau of Land Management.
DOI. NPS. Curecanti National Recreation Area.
Motorized and trailered watercraft launching in Blue Mesa Reservoir are required to be inspected for aquatic invasive species prior to launching, and if necessary, decontaminated in accordance with procedures set by the Colorado Division of Wildlife. In addition to the mandatory inspection prior to launch, boaters are encouraged to get an exit inspection to verify the watercraft has been cleaned, drained and dried.
DOI. Fish and Wildlife Service.