Images

These juvenile bighead carps are used to find potential physical, biological or chemical controls as part of an integrated pest management approach for natural resource managers.

Asian carp are invasive species that could pose substantial environmental risks and economic impacts if they become established.

These live Asian swamp eels were imported from southeast Asia and sold in an urban food market in the U.S. Raw or undercooked Asian swamp eels could transmit a parasitic infection called gnathostomiasis to consumers, and wild eels could become widespread in some U.S. waters.

The orange, coiled seashell of Olivella semistriata with the aperture (shell opening) facing up. Photograph taken 2002 or earlier.

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

The outlet tubes of Glen Canyon Dam were opened during the 2004 high-flow experiment on the Colorado River. 

Well-defined boundaries and crevasses are apparent in this photo of Shepard Glacier when its mass filled the cirque in 1913. (W.C. Alden)

This adolescent chick, hatched and raised at the USGS Patuxent Wildlife Research Center, is one of ten whooping cranes being released in Louisiana in February 2011. It is a milestone for the state and for the birds, which have not lived in the state since the 1950s.

This adolescent chick, hatched and raised at the USGS Patuxent Wildlife Research Center, is one of ten whooping cranes being released in Louisiana in February 2011. It is a milestone for the state and for the birds, which have not lived in the state since the 1950s.

This adolescent chick, hatched and raised at the USGS Patuxent Wildlife Research Center, is one of ten whooping cranes being released in Louisiana in February 2011. It is a milestone for the state and for the birds, which have not lived in the state since the 1950s.

The U.S.

The Westhope, ND gage house along the Souris River.

USGS gage house located near Bantry, ND.

Front gates at Shumagin Geomagnetic Observatory during installation, before landscaping to eliminate standing water.

A Kelp Crab (Pugettia producta) captured in a beach seine during a 2012 Bainbridge Island larval forage fish survey.  This survey focused on the abundance, habitat use, and food habits of larval forage fish (surf smelt and sand lance) and was conducted by scientists from the Columbia River Research Laboratory -Western Fisheries Research Center.

Aerial photo by Tom Roorda of the mouth of the Elwha River near Port Angeles, Wash. 

Palila (Loxioides bailleui). Photo by USGS Pacific Island Ecosystems Research Center.

Weir control at Beaver Creek below Linton, North Dakota.  For more information on the use of weirs to aid in the determination of streamflow, see volumes 1 and 2 of the USGS Water Supply Paper, Measurement and Computation of Streamflow.

A hydraulic fracturing operation is underway at this drilling pad in the Marcellus Shale gas play of southwestern Pennsylvania.

Unused and spent perforating gun used in oil and gas drilling and hydraulic fracturing. The pipe on the bottom left, shows holes created by the explosive charges mounted inside the pipe.

Bakken drilling and completion activities at a well along Interstate-94, 6 miles east of Belfield, North Dakota.

Wetlands Reserve Program site in Natchitoches Parish, Louisiana.  Ten years ago, this landowner worked with the USDA Natural Resources Conservation Service through the Wetlands Reserve Program to design and construct this slough as part of a plan to restore this field’s natural wetland hydrology.