Swimming in the Niagara River is extremely dangerous and illegal in most sections, particularly near the falls and the whirlpool. The river flows at speeds of up to 35 mph, and the underwater currents create "keeper holes" or "drowning machines"—circular currents that can trap even the strongest swimmers underwater indefinitely. In 2026, both the Niagara Parks Commission (Canada) and New York State Parks enforce strict bans with heavy fines and potential criminal charges. However, there are a few highly controlled, designated "safe zones" far away from the falls, such as Beaver Island State Park on Grand Island or certain supervised beaches in Niagara-on-the-Lake, where the water is calm and monitored. Even in these spots, the water is notoriously cold, rarely exceeding 60°F (15°C), which can lead to "cold water shock." For those seeking a water experience in 2026, authorities recommend the "Maid of the Mist" or "Whirlpool Jet Boat" tours, which provide a safe, regulated way to experience the river's power without the near-certainty of a fatal accident.