The National Hydrography Dataset Plus High Resolution map of waterways, created by the US Geological Survey ... the historical map of the Mississippi River's many courses. Previously: • Map ...

An atmospheric river event is forecast to bring rainfall, snow, and the potential for flooding to parts of California this week.

There’s a high chance that you’ve paddled alongside alligators if you’ve been in the waters of the southeastern part of the U.S.—it doesn’t matter whether you saw them or didn’t. These reptiles have ...