Images

The Cannonball River opening up at Breien, ND.

Viewing the Cannonball River at Breien, ND from the Highway 6 bridge looking southeast.

Cannonball River at Breien, ND from the east side of Highway 6 bridge.

Biologists study Pallid Sturgeon in the Lower Missouri River.

A calm canal flows intensely over the weir into the churning pool below.

Employee uses a Flowtracker to measure cross-sectional profile of a rivulet draining a mangrove forest.

Scientist raised the engine to navigate a tidal creek at low tide.  Note freeze damage to mangroves in the background.

Arrival of Salish Sea Tribal Canoes with USGS water quality sampling instrumentation onboard.

The Souris River at Westhope, North Dakota. The top photos taken on April 26, 1970, with a discharge of 1,110 cfs. And the bottom photo taken on April 19, 2011, with a discharge of 13,300 cfs and a gage height of 19.82 feet.

The Little Missouri River at Medora, North Dakota. Top photo taken by a USGS personnel in March of 1972, while the Little Missouri River was flooding the camp sites at Medora, ND. The bottom photo was taken by USGS Colton Rupp on May 24, 2011, with a discharge of 32,000 cfs and a gage height of 19.42 feet.

USGS hydrologist Martha Nielsen examines cuttings as a drill crew works to drill a new monitoring well at USGS station 443647070552303 (ME-OW400A) near Middle Dam on Lower Richardson Lake. The existing well heaved due to frost and had to be replaced.

The island was severed by a breach that may have developed as the back bay drained excess water following the peak of the storm surge, although the breach could have been initiated by waves and surge from the Gulf side. More analyses are required to determine the forcing processes.

An early streamgage is used to measure water levels on San Saba River. USGS crews would visit this equipment to collect water level readings.

The Bois de Sioux river channel near White Rock, SD.

Seam or bed of Pliocene lignite from a mine in the Balkan endemic nephropathy (BEN) area of Romania. Rainwater falling onto the surface penetrates into the ground, becoming ground water, and leaches toxic organic substances from this coal.

USGS scientist Bill Orem (left) and Adrian Muntean, a colleague from Romania, sampling water from a well in a Balkan endemic nephropathy (BEN) household in Serbia. The scientists will analyze the water for the presence of coal-derived organic substances dissolved in the water.

Native Americans of the Miwok tribe in the northern Sierra Nevada, California carved these basins into the granite bedrock to produce salt for trade. They filled the basins with water from a salt spring and let the water evaporate, leaving a salt residue in the basin. The basins are about a meter in diameter and span the area of a football field.

Bald Cypress trees are iconic symbols of wetlands, but their distribution and range may be vulnerable to climate change impacts.

A scientist creates a quality control sample for a study of MTBE, (methyl tert-butyl ether) a fuel oxygenate used in gasoline.

Sunrise on the North Platte River at Broadwater, Nebraska. Looking downstream from Hwy 92 bridge. January 2007.

2009 Red River flooding in Grand Forks, North Dakota