The river surfing scene is growing fast, with an increasing number of participants joining hundreds of river waves around the world . Unlike ocean surfers, river surfers rely on powerful currents that create standing waves . In theory, these waves can be ridden indefinitely. However, when they fall off or end their rides, there is a risk of getting trapped, entangled, and held underwater due to rocks or debris sitting on the riverbed. One of the causes of similar accidents is the surf leash. The history of river surfing is filled with many stories of close calls in urban or inland river streams. In the winter of 2013, two near-drownings in Alberta occurred in shallow, slow-moving rivers due to ankle leashes. A surfer in New Zealand also got trapped around a bridge pylon. He was freed by kayakers, but even one rescuer got briefly entangled. In 2025, a 33-year-old woman died after her legrope got entangled on the bottom of the Eisbach river wave in Munich , Germany. She was not ...