This story is part of a special National Geographic News series on global water issues. Rivers are the lifeblood of many plant, animal, and human communities. Yet many of the world's rivers have ...

What lies beneath? Rivers: diverse habitats with broadly varying niches. Communities reflect and influence local, upstream, downstream, and broader landscape conditions. Water current pervades ...

How much sediment does a river carry? Where does it all go? What happens along the way? How have human actions modified the way rivers work? Can rivers be restored after adverse affects from human ...

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A recent U.S. Environmental Protection Agency report concluded that 55% of United States rivers and streams are in poor condition. Some of us don't go to many rivers throughout our lives ...

A Minnesota Boat Club eight-man scull plies the waters of the Mississippi River on a training row in St. Paul early Aug. 19, 2009. (John Doman / Pioneer Press) Wondering how long the Mississippi ...

It is important to measure alkalinity to determine the stream or rivers ability to neutralize acid from rainfall ... in the water by either causing the water to become eutrophic or oligotrophic. pH is ...

River Mouth,River Plume,River Discharge,Surface Current,Wind Forcing,Ambient Water,Chlorophyll,Chromophoric Dissolved Organic Matter,Circulation Features,Coastal Zone ...

Estuary,Sea Area,Annual Average,Annual Concentration,Annual Ratio,CFL Number,Chemical Oxygen Demand,Coastal Ocean,Coastal Waters,Coastal Zone,Coordinate ...

An 83-year-old Colorado fisherman has resurrected his 12-year fight for public freedom to wade in the state’s rivers, seeking arrest and risking conflicts with landowners by returning to a ...

Even on a hot summer day, most Illinoisans know not to take a dip into a natural body of water because growing up, you’ve probably heard tales of people contracting viruses in lakes and rivers.

Domestic river cruises give travelers an opportunity to explore America without the hassle of international travel. Travelers can choose from a range of itineraries from coast to coast.