What Dane County is Doing
Implementation of the Dane County Aquatic Invasive Species Prevention and Control Plan (PDF) is led by the Administration Division and Office of Lakes and Watersheds in the Land and Water Resources Department.
Clean Boats, Clean Waters
Our Clean Boats, Clean Waters program has been a strong core of our prevention and control program. Dane County staff have also:
- distributed sponges with aquatic invasive species (AIS) prevention tips to paddlers, in partnership with the River Alliance of Wisconsin.
- supported AIS research, including “Potential Effects of Zebra Mussels in the Madison Lakes (PDF)”
- conducted watercraft inspection workshops
- ensured that Dane County staff who work outdoors do not accidentally transport invasives
- met regularly with Dane County bait shops to encourage their use of proper protocols for screening minnows and other live bait for aquatic invasives species, and their requests for customers to watch for and report any AIS they see in their bait
- given many presentations about aquatic invasives
- posted signs at trout stream easement access points throughout the county, encouraging wading anglers to inspect, clean and dry their equipment before and after wading
- installed and maintain aquatic invasives removal stations at the busiest boat landings on the Yahara lakes. Each station has tools to help boaters remove aquatic vegetation and organisms from their boats and trailers as they leave the water.
Carp are an invasive species in Wisconsin. Carp root around in the substrate of lakes, destroying vegetation and increasing water turbidity, degrading habitat for species that need clear water and vegetation. A single female can lay up to 300,000 eggs in a single spawn, so the carp population can grow rapidly and dominate a lake, outcompeting other fish. Dane County currently has common carp, bighead carp and grass carp and could also see the introduction of silver carp in the future.
One way to remove carp that has been successful in other locations is to radio track their location. Carp will school together during the cold winter months making it easier to remove them through commercial netting operations. In 2016, Dane County worked with the Department of Natural Resources on a fishery improvement project at Indian Lake County Park, removing 971 pounds of carp. This effort will help promote desirable native panfish, bass and northern pike. A video of this project is available on YouTube.
The Friends of Lake Kegonsa Society are currently working closely with Dane County, the Wisconsin Department of Natural Resources, and the UW Limnology Department on a carp removal project in Lake Kegonsa. For more information about this project, visit the Friends of Lake Kegonsa website.