What is now St_ Louis was once home to over 100 human-made mounds constructed by Native Americans — so many that St_ Louis became known as “Mound City.”.

Federal highway officials have announced $635 million of grants to repair or replace old bridges across the U.S. The grants awarded Thursday include improvements to a 200-foot-high bridge in Yellowstone National Park and the replacement of a bridge not far from a landslide zone in Alaska's Denali National Park and Preserve.

The U.N. weather agency is reporting that 2023 was the driest year in more than three decades for the world’s rivers, as the record-hot year underpinned the drying up of water flows and contributed to prolonged droughts in many places.

For the third year in a row, Louisiana is constructing an underwater levee in the Mississippi River to slow an influx of salt water from the Gulf of Mexico.

A new lawsuit says opening a spillway as a flood-control measure in 2019 sent polluted fresh water from the Mississippi River into the Gulf of Mexico and killed bottlenose dolphins that live in saltwater.

The EPA’s newest assessment of water quality and nutrient pollution in U.S. rivers and streams shows almost no progress on cutting the nitrogen pollution that comes primarily from farm chemical runoff.

Wildlife officials have captured hundreds of invasive carp from the Mississippi River near Trempealeau, Wisconsin.

State and federal wildlife agencies have developed a new weapon to slow down invasive carp across the Great Lakes region: traitor fish.

Drought.

Salt water inching up the Mississippi River is progressing more slowly than once projected — buying time for water systems in metropolitan New Orleans that draw drinking water from the river.

Citrus farmers in the southeast corner of Louisiana are scrambling to find ways to irrigate their crops with fresh water.

Salt water flowing from the Gulf of Mexico into the drought-stricken Mississippi River is prompting Louisiana Gov. John Bel Edwards to ask President Joe Biden to declare a state of emergency.

Salt water from the Gulf of Mexico is creeping up the drought-stricken Mississippi River and threatening drinking water supplies in some Louisiana communities.

A long stretch of hot, dry weather has left the Mississippi River so low that barge companies are reducing their loads as shipping costs soar.

Diverting Mississippi River water to states struggling with water scarcity isn't a new idea.

A coalition of environmental groups is suing Utah's government, saying the state has failed to stop the Great Salt Lake from shrinking at an alarming pace.

A growing number of companies are pledging to cut their greenhouse gas emissions to “net zero” to curb climate change, but a report says the goal is rarely supported by a credible plan.

The Mississippi River has crested at Davenport, Iowa, after rising for several days due to a spring surge of water from melting snow.

Some residents along the Upper Mississippi River evacuated their homes this week while others scrambled to prepare for near-record flooding.

In the video above, meteorologist Jonathan Kegges breaks down the timeline of events of the recent tornadoes that ravaged Mississippi and what people should look for on the radar to help deal with future tornadoes.

Nearly the entire stretch of the Mississippi River has experienced below average rainfall over the past two months, reducing water levels on the river to near record lows.

A shipwreck has emerged along the banks of the Mississippi River in Baton Rouge, Louisiana, as water levels plummet — threatening to reach record lows in some areas.

The unusually low water level in the lower Mississippi River is causing barges to get stuck in the mud and sand.

If “invasive carp” doesn't sound appetizing, how about a plate of copi.

Descendants of slaves who lived in southeastern Louisiana have won a key ruling allowing their legal opposition to a grain elevator to be built along the Mississippi River to go forward.

Iowa’s 2nd congressional district has the dubious distinction of having the second-most structurally deficient bridges in the country.

Federal and state agencies say they are responding to reports of oil and chemical spills resulting from Hurricane Ida following the publication of aerial photos by The Associated Press.

The water levels at the Great Salt Lake have hit a historic low, a grim milestone for the largest natural lake west of the Mississippi River.

Environmental and tribal groups opposed to Enbridge Energy’s ongoing effort to replace its aging Line 3 crude oil pipeline are occupying one of the company's pump stations.

Photos taken by a Mississippi River kayaker about five years before a crack was found in the Interstate 40 bridge linking Tennessee and Arkansas appear to show the fracture that led transportation officials to close the span indefinitely to cars and trucks.

The U.S. Coast Guard has reopened traffic on the Mississippi River near Memphis, Tennessee, after a three-day delay caused by a crack in an interstate bridge.

(CNN) – (CNN) -- A tornado ripped through Jonesboro, Arkansas, injuring six people and leaving a trail of flattened homes and buildings. MAJOR damage confirmed in Jonesboro, Arkansas from an intense tornado. A map on its website showed tornado strikes in Arkansas and Iowa, though none appeared to have been as damaging as the one in Jonesboro. The weather service map said power lines were knocked down and roofs blown off in Jackson County, Arkansas. The weather service issued a rare "Particularly Dangerous Situation" tornado watch for parts of the Midwest through Saturday night.