The floodplain forests along the upper Mississippi River are mostly made up of silver maple, cottonwood, willow, green ash and American elm. More: The Mississippi River's floodplain forests are dying.

The Mississippi River at the Carrollton Gage in New Orleans has climbed above 11 feet once again, prompting the U.S. Army Corps of Engineers, New Orleans District, to re-enter Phase I of their floo… ...

This marks the third activation of flood fight procedures this season. Phase I began on Feb. 24, was paused March 13, and resumed April 14 as the river once again surpassed 11 feet.