Above: Satellite view of the Great Lakes on a recent clear day ... one-third of the population of Canada live within their drainage basin. They hold about 6 quadrillion gallons of water, or ...

The Great Lakes rely on precipitation for replenishment. Each lake is surrounded by a drainage basin - an area of land where water from rain or snowmelt drains downhill into a body of water (in ...

Great Lakes water levels are dropping sharply, falling below record highs set in 2019 and 2020. Evaporation and precipitation ...

Blooms occur in Lake Erie’s western basin, Lake Michigan’s Green Bay and Lake Huron’s Saginaw Bay. North America’s Great Lakes are the largest source of fresh surface water in the world. They are ...