The biggest source of salty freshwater in D.C. and other major northern inland cities is an overapplication of road salt to thaw winter ice, which runs off into rivers or the ground.

When we think about sharks, most of us instantly think of the ocean. However, some shark species live in freshwater ...

Scientists have been shocked to find sharks appearing in freshwater rivers—far from their usual ocean habitats! But how is this possible? Are sharks adapting, migrating, or is something else ...

Learn about the climate, regulatory, and logistical hurdles in dredging Canadian lakes and rivers—and the tools that help ...

Located in Montenegro’s mountainous north, Kolašin is home to the country’s biggest ski resort, but the local rivers offer the potential for sustainable tourism to the area year-round.

Salmon, a tenacious, ecologically significant fish, is most renowned for its incredible migratory journey from freshwater rivers to the ocean and back again. Their unique, remarkable cycle of life ...

Freshwater mussels keep our rivers clean because they filter the water as they breathe and eat. Mussels, however, are dying. Scientists hope to discover what’s killing them and how to save them ...

Although freshwater environments, from creeks to rivers, brim with more than 10,000 species of fish, we may never get the chance to see many of these mysterious creatures as their populations decline.

Few freshwater fish can match the size of the Mekong giant catfish, which can exceed 10 feet and weigh over 660 pounds. Native to the Mekong River, this gentle giant feeds on plankton rather than ...

Dive into California's freshwater fun beyond the ocean. Explore the Colorado River, Lake Tahoe, Lake Mead, and hidden Southland lakes.

Our most detailed look yet at the strange lakes of Saturn’s moon Titan has revealed a diverse seascape, similar to Earth’s combination of freshwater rivers and salty oceans. Radar measurements ...

Many residents who live along the river in Croom have been trying to mitigate additional flooding as much as possible as well, but there is ongoing flooding in this area. The Withlacoochee River at ...