Images

This is not a lake! A USGS crew measures high flow during flooding on the Maple River near Mapleton, North Dakota. The instrument being pulled across the water is an acoustic Doppler current profiler (ADCP), which is used to measure streamflow.

A USGS crew prepares to measure streamflow during record flooding on the Maple River near Mapleton, ND, on April 6, 2019. The instrument pictured is an acoustic Doppler current profiler which measures streamflow as it's dragged across the water.

A USGS crew measures high flow during flooding on the Maple River near Mapleton, North Dakota. The instrument being pulled across the water is an acoustic Doppler current profiler, which is used to measure streamflow. The truck is parked on a road that had been overtaken by the river. 

Brittney Izbicki, USGS, at the edge of the ice in the Connecticut River, preparing to collect water-quality samples.

David Sullivan, USGS, using an ice bar to chip away at the ice built up on the trail to get down to the water-quality sampling site at USGS gage Connecticut River near Thompsonville, CT

Colin Sweeney, USGS, collecting water-quality samples from the Connecticut River, CT

Theresa Armijo, USGS, collecting water-quality samples from the Connecticut River by USGS gage 01184000, Connecticut River near Thompsonville 

USGS streamgage number 13309220 on Idaho's Middle Fork of the Salmon River in the Frank Church River of No Return Wilderness Area.

WWG Reading on the Wild Rice River in Minnesota during record Midwest flooding in spring 2019.

Recently retired hydrologic technician Doug Hutchinson services gage 10329500 MARTIN Creek near Paradise Valley, NV, March of 2019. This gage is designated as a centennial gage for FY21! Happy birthday, Martin Creek near Paradise Valley!

This is an animation showing the changing conditions of USGS streamgages for Water Year 2018 (October 1, 2017 to September 30, 2018). The conditions shown range from the driest condition seen at a gage to the wettest.

USGS technician Chris Broz helps take water measurements on the Big Sioux River during record flooding in March, 2019.

USGS scientists and technicians took water measurements during flooding on the Big Sioux River near Jefferson, SD in March 2019. Measurements for this site were 52,000 cfs at a gage height of 40.14 ft.

USGS technician Chris Broz helps take water measurements on the Big Sioux River during record flooding in March, 2019.

After record flooding on the Big Sioux River, USGS crews mobilized to take important water measurements.

After record flooding on the Big Sioux River, USGS crews mobilized to take important water measurements.

USGS scientists and technicians took water measurements during flooding on the Big Sioux River near Hawarden, Iowa in March 2019.

After record flooding on the Big Sioux River, USGS crews mobilized to take important water measurements.

After record flooding on the Big Sioux River, USGS crews mobilized to take important water measurements.

Groundwater science doesn't take a winter vacation! In this photo, USGS hdyrologic technician Jeremiah Pomerleau has snowshoed to a USGS groundwater monitoring site in Eustis, Maine. USGS scientists visit USGS groundwater observation wells year-round to measure water levels and maintain equipment.