the.com/hydrology
the science that tracks every raindrop's career path from sky to sea and back
ancient rootsEgyptians measured Nile floods with nilometers 3,000 years ago
the water cycleyour morning coffee may contain dinosaur-era water molecules
hidden majoritymost fresh water hides underground as invisible aquifers
residence timedeep ocean water can stay put for millennia
flood forecastingits math predicts disasters days before rivers crest