Falls Park Foam: What It Is and Why You Should Stay Away

Why You Should Stay Away from the Foam at Falls Park in Sioux Falls

As winter turns to spring in Sioux Falls, we welcome the return of robins, blooming flowers and yes, the mysterious foam at Falls Park. No matter which entrance you take into the park, you're greeted by a large yellow warning sign: "KEEP AWAY FROM THE FOAM IN THE RIVER." But why? What makes the foam at Falls Park so dangerous and what exactly is it?

According to an article from Michigan.gov, river foam is typically caused by the natural decay of aquatic plants. As these plants break down, they release oils that float to the water’s surface. Wind and wave action then push these oils to the shore, where turbulence mixes air into the organically enriched water, creating foam.

So now we know what the foam is, but why is it dangerous? Tragically, there have been multiple deaths linked directly to the foam at Falls Park, including those of children.

The danger lies in how deceptive the foam appears. While it looks light and calm on the surface, it actually conceals fast-moving water beneath. If someone loses their balance while trying to touch or interact with the foam, they can be swept away in seconds.

Consider this your yearly reminder: stay safe and keep your distance from the river foam at Falls Park. It may look harmless, but the hidden currents beneath can be deadly. Share this with friends and family to help spread awareness and keep Falls Park a safe place for everyone this spring.