What are Risks of Swimming Near Weirs or Dams?

Hidden Dangers

Swimming near weirs or dams can be extremely hazardous due to strong currents that can sweep a person downstream. A current of just 5 miles per hour (8 kilometers per hour) can make it difficult to swim against, while currents above 10 miles per hour (16 kilometers per hour) can be almost impossible to fight. This is especially concerning near dams, where currents can be significantly stronger.

Obstacles Beneath the Surface

Weirs and dams often have underwater obstacles such as rocks, logs, or pipes that can cause serious injury or death. These obstacles can be easily hidden from view, making it difficult for a swimmer to detect them. A swimmer swept downstream may not be aware of the dangers lurking beneath the surface, leading to a higher risk of injury or death.

What to Do If Swept Away

If you find yourself swept downstream while swimming near a weir or dam, try to remain calm and look for a safe place to swim to. Identify any obstacles in the water and plan a route to avoid them. Aim for a rock or other stationary object to swim towards, rather than trying to swim against the current. It’s also essential to know basic self-rescue techniques, such as the “tread water and wait” method, which involves treading water and waiting for help to arrive if you’re unable to swim to shore.