Bigfoot says avoid low-head dams Awareness literally saves lives

These dams are low height. Their one to fifteen foot drops allow water to flow over top. Below the surface, the falling water creates highly aerated, circulating currents that trap people. This is practically inescapable, even for strong swimmers. Life jackets, kayaks & boats can get also get trapped in the churn.

Low-head dams often look tranquil but are deceptively dangerous. Many victims jump from or float over them without knowing the risks. Others get caught unaware, as low head dams are hard to spot from upstream. Tragically, would-be rescuers often get caught in the current. 91% of dam-related deaths occur between April and August, also the busiest period for waterways.

As water crests and falls to the dam base, it creates a recirculating current that can push you down, drag you along the stream bed, then release you to the surface before sucking you back into the dam wall. People and boats get trapped, repeatedly slammed against the dam. Calm surface water can hide the danger and life jackets are no guarantee. With water churn and aeration, air bubbles decrease buoyancy by up to a third, making it difficult to float, even with a device.

Know the Area. Check maps and hazards. Speak to locals. Stay a safe distance from dams to avoid currents. Portage around dams or turn back.

Read Signs. Obey flood warnings, restricted access, portage and other postings. Dress for Danger. Always wear a floatation device. Tell Someone. Let them know where you’re headed and when you return. Don’t Attempt Rescue. Never jump in to help. Call 911. Use a a rope or throw bag to pull victims out.