As the boating season ramps up across Missouri, the Missouri Department of Conservation (MDC) is urging water recreation enthusiasts to take precautions against the spread of invasive zebra mussels. These fingernail-sized mollusks, originally from the Caspian Sea region, pose a serious threat to native wildlife, aquatic ecosystems, and infrastructure.
Zebra mussels were first discovered in Missouri in 1991 and have since spread to multiple rivers and lakes across the state, including Lake of the Ozarks, Bull Shoals Lake, and Smithville Lake. The mussels attach to boats, trailers, and equipment, allowing them to spread to new water bodies. Even microscopic larvae can survive in bilge water, bait buckets, and livewells.
To prevent further spread, MDC recommends boaters clean all equipment thoroughly, drain all water before leaving a site, allow vessels to dry completely before relaunching, and properly dispose of unused bait. A hot water rinse is advised for boats exposed to infested waters.
Boaters who discover zebra mussels are encouraged to report them to their nearest MDC regional office. For more information on zebra mussels and how to protect Missouri’s waterways, visit mdc.mo.gov.
