Images

Mississippi River water flows through the Bonnet Carré Spillway into the channel, where it will flow to Lake Pontchartrain.

The USGS Streamgage at Baton Rouge, Louisiana, during the 2015/2016 Mississippi River Valley Flooding.

Sections of Fashion Valley Road, San Diego, were closed by flooding of the San Diego River. Closed roads were a common scene in San Diego and throughout California during the El Niño-related storms, Jan 6 - 7, 2016. Hydrographers from the Poway Field Office closely monitored high-flow conditions throughout the storms.

Jon Newby and Travis Kordiak, USGS Hydrographers from the California Water Science Center Redlands Field Office, take high-water measurements at USGS streamgaging site 11059300. The site is on the Santa Ana River in San Bernardino, California, and is one of more than 500 streamgage locations in California.

USGS hydrologic technician Deena Green collects streamflow data at streamgage station 12413875, St. Joe River at Red Ives Ranger Station, Idaho

USGS hydrologist Jason Ramage collects a groundwater-level measurement using a steel tape in Freeport, Texas. 

A new interactive web application illustrates how groundwater, sediment compaction and land-elevation change are related in the Houston-Galveston region in Texas. 

USGS scientist Chris Rowden drives a research vessel measuring streamflow alongside another field crew on the Mississippi River at 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, 2015. 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.

Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.

USGS crews had two research vessels out measuring streamflow on the Mississippi River at St. Louis on New Years Eve, 2015. USGS scientists Eric Looper and Jason Carron are one of many USGS field crews out in the floodwaters over the holiday.

USGS scientists Chris Rowden, Larry Buschmann and Bob Holmes were on the Mississippi River at St. Louis taking streamflow measurements on New Years Eve, 2015. 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.

Trask River stage, discharge, and water-quality data are collected and used together to help monitor the current health of the river. Instream equipment is stored in protective housing to protect it from the elements. Data from the river are sent to equipment in the gage house, where it is stored then transmitted to USGS servers.

Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.

USGS crews had two research vessels out measuring streamflow on the Mississippi River at St. Louis on New Years Eve, 2015. 

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

USGS hydrologic technician Jayson Blom collects a groundwater-level measurement from an aquifer monitoring well at the Idaho National Laboratory.

Nitrate concentrations greater than the Maximum Contaminant Level (MCL) of 10 mg/L as N are predicted to occur primarily in the High Plains, northern Midwest, and areas of intense agriculture in the eastern and western United States.

Atrazine use (left) (left) is one of the most important factors used to predict atrazine and deethylatrazine concentrations in

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 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.