The National Hydrography Dataset Plus High Resolution map of waterways, created by the US Geological Survey, is the highest-resolution survey of its kind. With nearly 25 million rivers, streams, pipe ...

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

I’m starting from the beginning of the river which we call the source, here in the mountains. Rivers often start in upland areas like this, from lakes ... here on the map… But the river ...

Well, where do we start? Rivers, lakes, wetlands and other freshwater environments supply water that we need for drinking, growing food and other crops, producing energy and manufacturing all sorts of ...