Wisconsin Department of Natural Resources

Red Swamp Crayfish

Source: Wisconsin DNR Aquatic Invasive Species program

Date: Data is continuously updated. Metadata last updated 11/11

This data represents waterbodies where red swamp crayfish have been found. These invasives may be found in other waterbodies, but their presence has not been confirmed outside of the waters listed here. Monitoring is conducted on Wisconsin’s lakes and streams in the summer months, with the presence lists compiled in the fall.

For more information, please visit the Invasive Species pages.