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CNN interviews USGS National Flood Coordinator Bob Holmes live from the Mississippi River in St. Louis.

CNN interviews USGS National Flood Coordinator Bob Holmes live from the Mississippi River in St. Louis.

CNN interviews USGS National Flood Coordinator Bob Holmes live from the Mississippi River in St. Louis.

CNN interviews USGS National Flood Coordinator Bob Holmes live from the Mississippi River in St. Louis.

USGS scientists Chris Rowden, Larry Buschmann and Bob Holmes were on the Mississippi River at St. Louis taking streamflow measurements on New Years Eve. This information is critical to the National Weather Service, the U.S. Army Corps of Engineers and emergency managers in making flood predictions and response.

USGS scientists Chris Rowden, Larry Buschmann and Bob Holmes were on the Mississippi River at St. Louis taking streamflow measurements on New Years Eve. This information is critical to the National Weather Service, the U.S. Army Corps of Engineers and emergency managers in making flood predictions and response.

NBC Nightly News not only came out to interview USGS field crews on the Mississippi, they brought a team to fly overhead and capture video with a drone.

USGS scientists Chris Rowden and Larry Buschmann dock the boat and coordinate with emergency managers.

NBC Nightly News not only came out to interview USGS field crews on the Mississippi, they brought a team to fly overhead and capture video with a drone.

USGS scientists Chris Rowden, Larry Buschmann and Bob Holmes were on the Mississippi River at St. Louis taking streamflow measurements on New Years Eve. This information is critical to the National Weather Service, the U.S. Army Corps of Engineers and emergency managers in making flood predictions and response.

USGS crews had two research vessels out measuring streamflow on the Mississippi River at St. Louis on New Years Eve. USGS scientists Eric Looper and Jason Carron are one of many USGS field crews out in the floodwaters over the holiday.

USGS scientists Paul Rydlund, Eric Looper and Jason Carron dock the boat and coordinate with emergency managers.

USGS scientists Chris Rowden, Larry Buschmann and Bob Holmes dock the boat and coordinate with emergency managers.

Record flooding on the Meramec River near Eureka, Missouri. This area is close to a USGS streamgage and water quality monitoring station.

USGS scientist Chris Rowden drives a research vessel measuring streamflow alongside another field crew on the Mississippi River at St. Louis.

Here’s our river ray, peeking over the bridge at the water it’s going to measure soon. This is the Meramec River near Eureka, Missouri on December 30, 2015.

Here, you can see the effects of the Gasconade River’s flooding on a campground at Rich Fountain, Missouri. The floodwaters ate out the banks and scoured the surface, damaging concrete, steel, and asphalt. The water has since receded, but it will take some time to repair the damage and for the ecosystem to rebound.

Here we are, taking the river ray out for a walk. Actually, our technician, Scott Southern, is taking the river ray over to where the Meramec River is overflowing the bridge to take a discharge measurement on December 30, 2015.

USGS Hydrologic Technician Christopher Rowden is seen here documenting a high water mark on Maries River at Westphalia, MO. 

Non-native Cuban treefrogs have established a breeding population in New Orleans, Louisiana, the first such population on the U.S. mainland outside Florida. The treefrogs were discovered at the Audubon Zoo shortly after a shipment of palm trees from Florida were planted in the zoo's elephant enclosure in 2016.

Radium Springs, Georgia, under normal flow conditions.