Lakes Facts

Mount St. Helens threw a forest into Spirit Lake in 1980, and thousands of those logs still float there today. The landslide raised the lake about 200 feet and buried its outlet. To stop it bursting out and flooding the towns below, the Army Corps built a tunnel over a mile and a half long through a ridge, finished in 1985. It is still the lake's only drain, and it keeps buckling.

Lake Natron in Tanzania is so alkaline (pH up to 10.5) and hot (up to 60°C / 140°F) that animals that die in it get preserved and coated in mineral salts - their calcified carcasses inspired Nick Brandt’s famous posed-statue photos. The twist: this same caustic lake is where 75% of the world’s lesser flamingos are born. The soda flats and toxic water keep predators out, making it the safest nursery on Earth.

Death Valley is the hottest, driest place in North America. In February 2024, record rain turned its lowest point into a temporary lake called Lake Manly. It stretched six miles long and three miles wide, but only a foot deep. Death Valley has no outlet to the sea, so a lake this size almost never forms. People still grabbed kayaks and paddled across it.

Lake Hillier sits on a remote island off Western Australia. For 200 years, it stayed bubblegum pink through every season. Algae and bacteria in the salt crust cause the color, not the water. It is safe to swim in, just not to drink. Bottle a sample and it keeps that same shade. Heavy rain in 2022 diluted the salt, turning the lake grey. Scientists expect the pink to return within a decade.