The warm summer days in Missouri have brought out not just the sun-seekers but also an unwelcome guest—harmful algal blooms. The Missouri Department of Natural Resources has recently updated the status of the state parks and, unfortunately, it’s not all good news. Beaches at St. Joe State Park’s Pim Lake have been closed due to these harmful blooms, while a second beach at Thousand Hills State Park in Kirksville remains shut all summer for renovations. Now that leaves plenty of people wondering where they can safely take a dip.
According to KRCG, several beaches across Missouri are still open for swimming, providing options for those looking to cool off. Locations such as Cuivre River State Park’s Lake Lincoln Public Beach in Troy, and the public beaches at Lake of the Ozarks State Park are welcoming visitors. Other options include beaches at Long Branch State Park, Pomme de Terre State Park, and more. It’s a mixed bag for beachgoers this summer.
Understanding Harmful Algal Blooms
What exactly are these harmful algal blooms, and why the sudden surge? If you’re wondering, the hot Missouri summer has been a significant factor, alongside excess nutrients in lakes from agricultural runoff. The blooms thrive in warm conditions, turning waters a disturbing green or slimy appearance, as noted by KOMU.
These blooms release toxins that pose risks not only to humans but also to pets and livestock. The Missouri Department of Natural Resources advises anyone near affected waters to avoid swimming, drinking, or letting pets approach. Symptoms of exposure can vary from skin irritation to stomach issues, and anyone feeling unwell should seek medical attention promptly.
Keep Informed and Stay Safe
The Missouri HAB Response Team keeps a watch on these situations, with a detailed map that pinpoints locations of reported blooms nationwide. This valuable resource, highlighted by the Missouri Department of Natural Resources, includes color-coded dots indicating bloom status. Checking this map can be a game-changer for anyone planning a day out by the water.
For those passionate about enjoying the great outdoors, it’s vital to stay informed—local beach managers are responsible for notifying the community about harmful algal blooms. Even in areas where blooms aren’t reported, maintaining healthy water habits is crucial. So, if you spot any suspicious water during your next visit, report it to the HAB Response Team. They’re there to help ensure your safety and that of the environment.
This summer, though the warm invites us to splash around, let’s not forget to keep our wits about us while we enjoy Missouri’s beautiful lakes and parks.



