In Québec, we’re fortunate to have stunning lakes and rivers for swimming, fishing and paddling. To ensure your outings on the water remain enjoyable from start to finish, keep your distance from dams and obey all signs.
Dam operations that affect the currents
The water near dams may seem calm, but that’s not always the case.
The action of turbines downstream from a hydroelectric generating station creates strong currents that are often invisible at the surface, yet extremely powerful.
Spillways are used to release excess water. When the gates open, the water level downstream can rise quickly. In just a few seconds, a shoreline or rock that was accessible can become submerged, and so can you. For a worry‑free outing, make sure to always keep a safe distance and keep an eye on changes in the water level.
Sudden, invisible and uncontrollable dangers
The equipment at a hydropower facility can start up at any moment, without warning. When that happens, the speed and strength of the current can:
- Capsize your vessel
- Pull you toward hazardous zones or structures, such as a spillway
- Drag you under
Even an Olympic swimmer couldn’t fight currents that strong. Anyone in that situation could drown.
Upstream and downstream: What it all means
Imagine a river that flows towards a generating station or dam. The upstream part of the river is before the dam, where the water level is generally higher, and the downstream part of the river is after the dam, where the water level is lower.
Both upstream and downstream of a generating station, the possibility of drowning is real.
Always respect signs and safety markings
To signal danger and prevent accidents, Hydro‑Québec installs booms, warning signs, and fences. It is essential to recognize these clear visual markers and, above all, never cross them. Each plays a crucial role in marking high‑risk zones around the facilities.
Never compromise safety
- Golden rule: Stay far away from dams.
- Never cross boom lines or fences, and always follow the rules posted on signs.
- Explain the risks, especially to children and teenagers. And if you can, don’t hesitate to speak up if someone gets too close.
- When in doubt, back up. If you aren’t sure an area is safe, don’t go there.
Enjoying water safely sometimes means keeping your distance
Taking a minute to observe your environment is the best way to ensure a beautiful day on the water. Being careful doesn’t mean you can’t have fun. On the contrary, it means you can have fun now and in the future, worry‑free.
