
Cold water shock is a major contributor of drowning incidents: it can trigger involuntary gasping and muscle failure quickly and incapacitate even strong swimmers. Anytime w ater temperatures dip below 70°F (21°C), there’s risk of cold water shock. Before you head out for a lake swim, chec k the King County lake swimming webpage for current temperatures.
Keep these tips in mind:
- Wear a life vest during water activities.
- Keep a close eye on children.
- Alcohol enhances hypothermia.
- Even experienced swimmers can lose muscle control very quickly.
- Fast-flowing water will make rescue difficult.

