Images

Mokelumne River near confluence with the San Joaquin River in the Sacramento-San Joaquin Delta, CA, looking downstream, with Cordell Johnson (USGS PCMSC) and Rachel Allen (USGS PCMSC) collecting data from the R/V Fast Eddy.

Orthophoto of the mouth of the Elwha River in Washington. The orthophoto was compiled from images collected with a Ricoh GR camera operating at 2-second intervals and mounted on a Cessna 172 piloted by Rite Bros. Aviation.

Orthophoto (GigaPan) of the former Elwha Dam and former Lake Aldwell, on the Elwha River, Washington, compiled from ultra high-resolution images collected with a Ricoh GR camera operating at 2-second intervals, mounted on a Cessna 172 piloted by Rite Bros. Aviation and processed using Structure-from-Motion techniques.

Orthophoto (GigaPan) of the former Glines Canyon Dam and former Lake Mills, on the Elwha River, Washington, compiled from ultra high-resolution images collected with a Ricoh GR camera operating at 2-second intervals, mounted on a Cessna 172 piloted by Rite Bros. Aviation and processed using Structure-from-Motion techniques.

Greater White-fronted Goose marked with GSM/GPS collar is ready for release in the Sacramento Valley.

USGS Active Groundwater Level Network 3.12.18

Hot springs can occur in many parts of the world. The water is hot not due to climate, but rather due to geothermal activity underground, such as volcanic activity or active hydrothermal heating from hot material in the ground. Hot springs result from water heated by underground geothermal activity finding its way to the land surface. 

On November 5, 1967, a line of vigorous lava fountains erupted on the floor of Halema‘uma‘u at the summit of Kīlauea. Lava soon covered the entire crater floor as volcanic gases billowed skyward (aerial view). Near the center, a pool of molten lava repeatedly overflowed a levee of crusted lava, spilling flows onto the lava-covered crater floor (inset).

Land subsidence in California - Approximate location of maximum subsidence in the United States identified by research efforts of Dr. Joseph F. Poland (pictured). Signs on pole show approximate altitude of land surface in 1925, 1955, and 1977. The site is in the San Joaquin Valley southwest of Mendota, California.

View along a bluff in Tanner Creek watershed following the 2017 Eagle Creek Fire, Oregon (Columbia Gorge)

On November 5, 1967, a line of vigorous lava fountains erupted on the floor of Halema‘uma‘u at the summit of Kīlauea. Lava soon covered the entire crater floor as volcanic gases billowed skyward (aerial view). Near the center, a pool of molten lava repeatedly overflowed a levee of crusted lava, spilling flows onto the lava-covered crater floor (inset).

USGS wildlife biologist Emma Kelsey searches for potential Ashy storm-petrel nesting habitat on Piedras Blancas rock, off the California coast. Ashy storm-petrels make their home in burrows and crevices on offshore rocks and islands, and only enter and leave nests under the cover of darkness.

Bird's eye view of the ISA 24th Council

The responses of pikas and marmots to weather and snowpack dynamics have been species-specific.   

Southern sea otters (Enhydra lutris nereis) float in Morro Bay, CA.

Brielle Heflin noosing Common Murres off their colony at Gull Island, Alaksa.

Scientists examine an endangered Least Bell's Vireo in Baja California, Mexico.

Healthy-looking riparian habitat in Baja California, Mexico.

Lush riparian habitat in Baja California, Mexico.

USGS colleagues from Centro de Investigaciones Biológicas del Noroeste in Baja California, Mexico hold an endangered Least Bell's Vireo.

Mexican scientists examine an endangered Least Bell's Vireo for ectoparasites in Baja California, Mexico.