Images

A member of the USGS Glen Canyon Adaptive Management Working Group in Flagstaff, Ariz., monitors the Colorado River downstream of Glen Canyon Dam.

Aquatic biologist Tom Sabol of the Grand Canyon Monitoring and Research Center takes samples from the Colorado River.

The river outlet tubes at Glen Canyon Dam on the Colorado River in Arizona. At noon Monday, Nov. 19, U.S.

Rush River at Amenia, North Dakota, streamflow 1,650 cubic feet per second,  looking upstream.  Photograph taken during spring 2009 flooding.

This photo was taken at Station 4 in 2009 before the Great Works Dam was removed. This location was just upstream of the dam and water levels are significantly lower now that the dam is removed.

A photo taken before the Great Works Dam was removed (likely in 2009), looking upstream from a boat just upstream of the Great Works Dam.

This USGS file photo was taken at a USGS gaging station on the Passadumkeag River at Lowell, Maine (01035000) in 1915. The USGS collected streamflow at this location from 1915 through 1979. The photo shows an unknown hydrographer standing next to a chain gage. The chain gage was used by a local observer to make manual readings of water level. 

USGS scientist Jimmy Hopkins takes a streamflow measurement on the Sabine River on March 12 near Bon Weir, Texas.

A large-volume public supply well in San Antonio, Texas.  This well is being sampled for water-quality constituents as part of the NAWQA Enhanced Trend Network project.

Speed Rail Mount with adjustable Pitch Roll

Field training on well inventory and collection of water-level data at a non-flowing well near Yeghegnavan, Armenia, near the Armenia/Turkey/Iran border. Mt. Ararat is in background.

The growth of aquaculture to raise trout, sturgeon and other cold-water fish has increased withdrawals of critical groundwater in the Ararat Basin of Armenia. The USGS is working with partners, including USAID, to develop scientific tools for water-resource managers to understand and predict consequences of management decisions in Armenia.

Mark Anderson, Director of the USGS South Dakota Water Science Center, demonstrates how to collect a stable isotope sample from a flowing well near Sis, Armenia.

Field training on how to measure water level using a pressure gage for a flowing well in Sis, Armenia.

USGS New Jersey Water Science Center Hydrographers on the Susquehanna River collect water quality samples.

North-oriented view of the Rio Grande at New Mexico State Road 359 near Mesilla, N. Mex., February 11, 2016 (photograph by Nicholas R. Glaser, U.S. Geological Survey).

SIR 2016–5011

North-oriented view of the Rio Grande from New Mexico State Road 359 near Mesilla, N. Mex., February 11, 2016 (photograph by Nicholas R. Glaser, U.S. Geological Survey).

SIR 2016–5011

USGS employee conducting a discharge measurement with a Flowtracker at USGS gage 13052200 TETON RIVER AB SOUTH LEIGH CREEK NR DRIGGS, ID.

USGS gage 1188000 Bunnel Brook near Burlington CT

Upstream view of the Rio Grande from a location about 1 mile southwest of the Montaño Bridge. Photograph was taken January 24, 2016, by Nathan Myers.

SIR 2016–5021