Images

Bumble bee landing on a cone flower provided by USGS Ecosystems Mission Area. 

Photograph showing USGS employees on State Highway 104 near the Arkansas River near Haskell, Oklahoma, streamgage (07165570). Photograph by Kevin Smith, U.S. Geological Survey.

 U.S. Geological Survey Open-File Report 2020–1090

USGS hydrologist Tim Cowdery titrates water alkalinity in a mobile sampling van using an electronic field form.

Beach-ridge prairie at Glacial Ridge National Wildlife Refuge

USGS technician Jody Hulne collects a groundwater nutrient sample at Glacial Ridge National Wildlife Refuge.

USGS scientists Nicholas van der Elst and Alan Yong installing a seismometer near the 2019 Ridgecrest earthquakes in southern California in order to record its aftershocks.

View to northeast from southwestern Arctic National Wildlife Refuge-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).

Southward view of tundra surface and lakes on Canning River Delta near northwestern corner of Arctic National Wildlife Refuge-1002 Area.

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

This is remote capture image of a Yosemite toad seen crossing beneath "toad road" structure built atop a forest road in the Sierra National Forest. Reseachers are exploring tools, such as this elevated road structure, or "toad road," to reduce vehicle strikes to this threatened species.

A well at a restored prairie on Lake Agassiz beach ridge, Glacial Ridge National Wildlife Refuge

Morning fog over beach ridges at Glacial Ridge National Wildlife Refuge

Prairie Dog, Glacial Ridge National Wildlife Refuge

Danaus plexippus. The Monarch Butterfly. Maryland.

Water collected from the lake at the bottom of Halema‘uma‘u is prepared for laboratory analyses at the USGS California Volcano Observatory. Results thus far reveal chemistry indicative of complex reactions among the water, magmatic gases and Kīlauea's basaltic rocks. 

The sampling mechanism (on blue tarp) is prepared and the Unoccupied Aircraft System (UAS) is inspected just before take off to collect water from the Halema‘uma‘u crater lake. Brightly colored flagging tape tied to a cable attached to the UAS indicated depth as the sampling tool was lowered into the water. 

USGS-HVO scientists and DOI UAS team members collect samples of water from the Halema‘uma‘u crater lake. 

The Ben Franklin Bridge stretches over the Delaware River. The Delaware River Basin provides water to big cities such as New York and Philadelphia. 

A commercially caught wild black carp from the Mississippi River. Credit: USGS.

European green crab captured in Washington. Green crabs are invasive to the region and adversely impact the local shellfish industry by outcompeting native species.

USGS scientist surveys water levels on the Delaware River while streamflow measurements are made by boat. These measurements help scientists understand the amount of water and constituents being transported by the river.