Images

This photo of the Veazie Dam on the Penobscot River was taken just before the dam was breached for removal. This perspective shows the challenge the dam posed to wildlife navigating the river. 

USGS scientists Paul Frederick and Mike Descant make sure there is enough clearance for their boat to drive under a bridge on the Atchafalaya River near Melville, La. 

An excessive amount of weeds flows down North New River.

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

Scientists electrofish low-salinity shorelines, Tarpon Bay, Everglades National Park.

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.

Scientists set up to measure flow from a mangrove forest.

Alicia Torregrosa is downloading data from a phenocam on BLM land in Idaho.

Comparison of satellite images of Mendenhall Glacier (Left - Landsat 5, Aug. 17, 1984; Right - Landsat 8, May 16, 2014).

Mike Sabatino (volunteer for science) wires a weather station in the Shenandoah National Park

Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System.

Asbury (Abby) H. Sallenger has been named one of the authors of a chapter in the next IPCC report, due to be published in 2014. Sallenger has been assigned to co-author Chapter 5 of the Fifth Assessment Report, entitled Coastal Systems and Low-Lying Areas.

USGS biological sampling trap collecting emerging insects to determine the quantity and quality of insects as potential food resources available to insect-eating birds.

A clear, conical trap collects emerging aquatic insects on Navigation Pool 8 of the Upper Mississippi River for a USGS study examining the effects of Asian carp on insect-eating birds.

Many species of birds rely on wetlands such as this bald cypress swamp, one of the ecosystems currently being studied by scientists at the USGS NWRC.

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

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

This picture was taken at our juvenile Chinook tagging shed (old town Sacramento) looking upstream at our release location for our study.

Sample collected from Madison Springs Hut in the White Mountains (~ 5,000 ft above sea level).

Collecting samples (sediment, aquatic vegetation, benthic invertebrates, zooplankton, forage fish, and predatory fish) to evaluate δ 15N ratios in the food web within Liberty Bay to evaluate urbanization effects on the nearshore ecosystem. (Coastal Habitats in Puget Sound program).