waterways

Thousands of the nation’s largest water polluters are outside the E.P.A.’s reach because the Supreme Court has left uncertain which waterways are protected.

Many sewer systems are frequently overwhelmed, with sewage spilling into waterways and polluting them with excrement and industrial chemicals.

The pollutants that coal plants are scrubbing from their smokestacks are finding their way into water instead.

Every winter, airports across the country spray millions of gallons of deicing chemicals onto airliners and allow the runoff to trickle away.

When the chemicals end up in nearby waterways, the deicing fluid can turn streams bright orange and create dead zones for aquatic life.

(American Society of Agronomy) A new study that examines whether reliable prediction models could be created to identify eroded waterways from digital terrain information, in order to help farmers and conservation professionals do a better job of designing and locating grassed waterways to reduce soil erosion.