Multimedia Gallery

Apparatus used to test the sensitivity of eels to low-voltage pulsed DC electric fields. Knowledge of sensitivity of eels to electric fields enables development of behavioral barriers that use electricity to guide eels away from turbine intakes.

Prototype design of an airlift developed at CAFL to transport downstream migrant eels through a bypass pipe and away from turbine intakes. The airlift design passes eels as well as a conventional siphon or gravity pipe.

Radio-tagged silver phase American Eels being released for a CAFRL telemetry study of downstream passage of eels at hydroelectric dams on the Shetucket River, Connecticut.

Left: Prototype ABS plastic eel climbing ramp under development and testing at CAFRL. New substrate design allows for passage of a wider size range of eels with less need for precise flow regulation. Right: juvenile eel climbing wetted ABS plastic substrate.

Map of dissolved oxygen and turbidity along the Milwaukee River.

Woods Hole Coastal and Marine Science Center geologist, Ben Gutierrez, moderates a panel with PEP coordinators, Jonique Howard, Onjale Scott Price, and Adrienne George,  at the 2019 Partnership Eucation Program (PEP) 10th Anniversity Conference and Celebration, Woods Hole, MA June 28-30, 2019. 

Woods Hole Coastal and Marine Science Center geologist, Ben Gutierrez, moderates a panel at the 2019 Partnership Eucation Program (PEP) 10th Anniversity Conference and Celebration, Woods Hole, MA June 28-30, 2019.

A pilot flying a UAS on the beach.

Looking up at a drone hovering near an open-path methane analyzer mounted on a flux tower. Instruments mounted on both the towers and on the drones are measuring gases emitted from the soil.

USGS gage 05293000 YELLOW BANK RIVER NEAR ODESSA, MN with High River Water Level From Flood.

Hydrologic Technician using crane to collect a bedload sample from the bridge.

View from Durand bridge of boat crew conducting multibeam surveys

Durand streamgage mounted to bridge - looking downstream.

These images show grass carp larvae from the Maumee River. Characteristics of larval grass carp include overall length (left), skeletal muscle development (center) and presence of an eye spot that lacks pigmentation (right; pigment starting to develop on lower eye).

Well head of Sourdough oil discovery on Alaska state lease less than one mile west of 1002 Area showing minimal disturbance of permafrost polygons.

Geologists examine oil-saturated sand (unconsolidated), sandstone (dark orange-brown rocks), and concretions (light orange rocks) along the Jago River in the 1002 Area, about 18 miles southeast of Kaktovik.

Oil-saturated Miocene or younger sandstone in the Sagavanirktok Formation exposed at Angun Point on the coast of the Arctic Ocean, northeastern 1002 Area.

Oil-saturated Miocene or younger sandstone in the Sagavanirktok Formation exposed at Angun Point on the coast of the Arctic Ocean, northeastern 1002 Area.

Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western 1002 Area. Weathered surface is light gray and freshly broken surface is brown.

Geologists examine oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western 1002 Area. Weathered surfaces are light gray and freshly broken surfaces are brown.

View to the northeast from near the eastern boundary of the 1002 Area west of the Aichilik River.

Northward view from southeastern corner of 1002 Area near Okerokorik River showing gently rolling topography typical of the southern coastal plain.

Eastward view from east-central 1002 Area near the Jago River. Northeastern Brooks Range visible in distance at right.

View to the northeast from east-central 1002 Area near the Jago River.

Northward view towards Kaktovik from southeastern 1002 Area. Location is along Sabbath Creek, a tributary of the Jago River.

Northward view in central 1002 area near the Sadlerochit River showing gently rolling topography typical of the southern coastal plain and meandering creek.

Northward view in central 1002 area near the Sadlerochit River showing gently rolling topography typical of the southern coastal plain.

Northward view towards Camden Bay from west-central 1002 Area near the Katakturuk River. Patterns in foreground are permafrost polygons.

View to the northeast towards Camden Bay from west-central 1002 Area. The tundra and lakes in this area displays a variety of patterns caused by permafrost.

View to northeast from western Sadlerochit Mountains near the Tamayariak River. This gently rolling topography is typical of the southern coastal plain.

Northward view in western 1002 area with ice in Camden Bay in distance. North sloping, tundra-covered surface is typical of coastal plain.

Northward view to coast of Canning River Delta with thin barrier island and ice pack beyond.

Southward view of tundra surface and lakes on Canning River Delta near northwestern corner of 1002 Area.

View to the southeast from near the Canning River Delta. Visible in foreground are permafrost polygons cut by caribou trails.

View to northeast from southwestern 1002 Area with ice in Camden Bay in distance. In foreground, red-weathering rocks are Hue Shale (oil-prone source rock with is present throughout 1002 Area) and dark gray rocks are Kemik Sandstone (lateral equivalent to Thomson sandstone, main reservoir in Pt. Thomson field).

View South from Wolverine Glacier

Tree-ring analyses from Lassiter Swamp, located along a tributary of the Chowan River, indicate that cypress trees have occupied the site for at least 500 years. To extend the record even farther back in time, scientists from USGS, Duke University and East Carolina University are working together with students at C.S. Brown High School STEM in Winton, NC to study sediment

Scientists from the St. Petersburg Coastal and Marine Science center collecting seismic and bathymetry data within the nearshore waters of Cedar Island, Virginia. Outside the cabin of the R/V Sallenger, a CHIRP seismic sled is being towed using dock lines and cable, inside captain Andy Farmer navigates the vessel using pre-planned survey lines while Chelsea Stalk

This photo shows an outcrop of pyroclastic flow deposits near Willow Creek on the Pumice Plain at Mount St. Helens. The dramatic lines crossing the outcrop indicate contacts between different layers of pyroclastic flow deposits. Two participants of the 2019 GeoGirls program are shown studying the outcrop, using it to understand the eruptive history of the volcano. GeoGirls

USGS scientist B.J. Reynolds sets up a solar-powered, satellite-uplinked GPS base station in the Fire Island Wilderness Area to support detailed elevation surveys.

Downy woodpeckers are commonly found in a residential area, woodlands, river groves, orchards, and parks throughout South Dakota. They are small-sized, with short stubby bill and black spots on the white outer feathers of the tail. Mostly they feed on insects, however, they also eat seeds and berries. They forage at any level of vegetation, live in the cavity of a tree.

Human settlement certainly disrupts wildlife, but the smaller and more adaptable members of a disturbed ecosystem tend to remain, coloring urban landscapes as reminders of the wild from which we came. This handsome katydid stood sentinel for more than an hour over throngs of Saturday shoppers in downtown Sioux Falls, SD on August 10, 2019, perched atop the word "Fargo" on

While surveying high water marks in Oakridge, Oregon, bumble bees buzzed around the river banks. The bees often mistake our bright colored equipment and florescent safety gear for tasty yellow flowers.

While surveying high water marks in Oakridge, Oregon, bumble bees buzzed around the river banks. The bees often mistake our bright colored equipment and florescent safety gear for tasty yellow flowers.

Torrent salamanders are Northwest-U.S. endemic, headwater-stream-associated amphibian species that have a dearth of basic ecological information, but are thought to be highly vulnerable to habitat changes. This taxon currently has two candidates for listing by the Endangered Species Act: the Cascade torrent salamander (Rhyacotriton cascadae) and the Columbia

Nature always displays vibrant colors. It is only a matter of time until you get the chance to witness its beauty. Even more difficult is capturing this beauty through the lens. Here, we see the magnificent beauty of the falls on the Big Sioux River, from which Sioux Falls, SD takes its name, showing the vibrant colors of nature just before sunset.

Viewers look through several years of change in an interactive display at the USGS Earth Resources Observation and Science Center.