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 ...

The weather impacts are associated with an atmospheric river that arrived over the weekend. An NWS weather map shows all alerts issued in the Northwestern U.S. for an ongoing atmospheric river.

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