Millions of Americans are drawing from surface-water supplies that are already stretched far thinner than most forecasts anticipated, and a new federal assessment puts hard numbers on the problem for ...

Michigan has the highest percentage of water area among U.S. states, at 41.5%. Alaska has the largest total water area, while Michigan leads in Great Lakes water area. Michigan's large percentage of ...

Across the country, the data collected at stream gauges managed by the U.S. Geological Survey are used to implement drought measures when streamflows are low, alert local authorities of floods, help ...

An instrument resembling a two-tone blue wrapping paper tube sits at the edge of Manatee Springs near Chiefland. Every 15 minutes, it samples the spring’s water, measures its nitrate levels and shoots ...