This story appears in the December 2019 issue of National Geographic magazine. For cartographers and cartophiles, Harold Fisk’s 1944 maps of the lower Mississippi River are a seminal work.

The gateway leads to an 800,000-acre floodplain of wilderness. It's why John Ruskey and his team from the Lower Mississippi River Foundation have been mapping the Atchafalaya (uh-CHAFF-uh-lie-ya ...

"But we had one white spot on our map, and it said 'USA,'" Hagen said ... The ship will sail itineraries on the Upper and Lower Mississippi River between St. Paul and New Orleans, where Hagen ...

The leading edge of the saltwater wedge coming up the Mississippi River is near mile marker 69.4, near Jesuit Bend. This map plots Corps ... taking advantage of the lower river’s deep navigation ...

A first-of-its-kind project seeking to restore river ecosystems along 39 miles of the Lower Mississippi River has federal approval to move forward — if it can secure a slice of the federal bankroll.

The lower reaches of the Mississippi River are being hit by record floods, as detailed on our In Focus photography blog. While there are thousands of news stories about what's happening ...