Images

Sunrise on an evapotranspiration-monitoring site in a riparian grassland along the Platte River, Nebraska on September 25, 2007.

Backscattered electron image of radiating fibers of kaolinite growing in volcanic rock altered by fluids connected to hot springs near Lassen Volcanic National Park. Associated with the kaolinite are rounded masses of silica and iron oxides (bright areas) that formed from pyrite. The composition and textures help us evaluate the origin of ore deposits and

Taryn Lopez measuring the temperature of gas emissions near summit of Augustine Volcano.

I took this picture while setting up a study of this invasive spp.  Of snail. 

The Puhi-o-Kalaikini ocean entry and delta. The light colored lava on the delta behind the plume is from recent surface flows.

Pu'u 'O'o was not as fumy today as usual, allowing decent views of the crater floor. The Pu'u 'O'o webcam, GPS station, and other equipment are the white dots on the crater rim.

One of the many successive littoral explosions that occurred at the Puhi-o-Kalaikini ocean entry, where lava exiting the tube enters the water. The explosions were throwing ejecta up to about 20 meters.

Rivers in middle Tennessee crested May 2-3,2010, breaking records at many USGS-operated streamgages. The flood peak on the Cumberland River in downtown Nashville ranks as the highest observed during the past 73 years.

This image is of solar panels in Colorado.

Photo of observation well, pressure transducer, and electric water-level tape in Norman, Oklahoma.

USGS Hydrologists using the USGS Well Flowmeter and Downhole Sampler on a well in Moore, Oklahoma. More info can be found in Fact Sheet 2005-3111 (PDF).

"As our future scientists, it is important that these students understand the Department's role in space-based science and how they can make a positive impact on the Colorado economy by pursuing high tech jobs," said Secretary Salazar. "I applaud schools like Skyline for providing the resources and training needed to create an innovative workforce."

Hooks baited with worms are clipped to trotlines in an effort to catch pallid sturgeon in the Lower Missouri River.

Researchers are installing an underwater microscope on the R/V Theodore H. Schmudde.

USGS scientists Joel Galloway and Dan Thomas prepare to take streamflow and water level measurements of the flooded Red River in downtown Fargo, ND. The USGS Red River of the North at Fargo streamgage can be seen in the background.

Biologists with the Nebraska Game and Parks Commission release a 3 kilogram non-reproductive male pallid sturgeon.

Researchers are viewing imagery obtained via the underwater microscope.

Upon making an incision in PLS11-008 in which to implant a telemetry transmitter, black eggs pushed to the surface.  A few of the eggs were collected for analysis on how close she is to spawning.  

Red Buds blooming along the banks of the Missouri River in April 2011.

Lisbon Chute is a side channel to the Missouri River between Glasgow and Arrow Rock, Missouri, on the Big Muddy National Wildlife Refuge. It currently has a rock inlet structure (pictured) which controls the amount of water that flows into it from the main channel of the Missouri River.

An aerial view of subsiding marshes in the Mississippi River Delta. An aerial view of subsiding marshes in the Mississippi River Delta. This region contains vast areas of marshes, swamps, and barrier islands—important habitat for wildlife, as nursery grounds for marine life, and as protective buffers against storms and hurricanes.