With more snow melt this year than in recent years, that’ll likely mean a shock to the system for many water recreationists, according to PG and E spokesperson Brandi Ehlers-Merlo….

click to listen to Brandi Ehlers-Merlo

Merlo says sudden immersion in the colder water can stimulate the so-called “gasp reflex”, causing an involuntary inhalation of air or water. She says it can even trigger cardiac arrest, temporary paralysis and hypothermia….

click to listen to Brandi Ehlers-Merlo

Merlo says cold water entering the ear canal can cause vertigo and disorientation. This may confuse swimmers, causing them to venture deeper into the water. And for boaters, Merlo says there will be many more unseen obstacles, with the deeper and swifter water making them even more treacherous. Guided trips for inexperienced paddlers are recommended.