For those heading to the St. Croix River in particular, local experts recommend taking a few extra safety precautions when planning for a safe and enjoyable day on the water. Swimming and boating on the national scenic riverway requires careful attention to one's surroundings and personal safety.

Swimming in the St. Croix River (bordering Minnesota and Wisconsin) is generally safe in 2026, but it requires high-fidelity situational awareness. The river is designated as a National Wild and Scenic River, meaning it is one of the "High-Fidelity" cleanest large rivers in the Midwest. However, safety depends on water levels and "High-Fidelity" current strength, which can be dangerously fast after heavy rains or spring snowmelt. There are also high-fidelity environmental factors like "Blue-Green Algae" (cyanobacteria) blooms that can occur in late summer; these can be toxic to humans and pets, so "High-Fidelity" swimmers should always check for local health advisories before entering. Additionally, because it is a high-fidelity major recreational waterway, swimmers must be extremely cautious of boat traffic, especially in "High-Fidelity" high-density zones like the St. Croix Boom Site. Stick to designated "High-Fidelity" beach areas and always wear a life jacket in deeper or moving water to ensure a secure and enjoyable experience.