Images

The Colorado River passing through the Grand Canyon in Arizona.

Juvenile white sturgeon held by human hand. Columbia River, bottom trawl for yoy indexing.

Weighing a juvenile white sturgeon. Columbia River, bottom trawl for yoy indexing.

This hillslope above the turnpike burns every few years. The location is 18º3'N, 66º13'W and the elevation is 255 m.

This hillslope above the turnpike burns every few years. The location is 18º3'N, 66º13'W and the elevation is 255 m.

This hillslope above the turnpike is subject to fires every few years. The location is 18º3'N, 66º13'W and the elevation is 255 m.

USGS scientists capture and release wild birds while monitoring for West Nile.

Ice breaking up and metrologic instrumentation measures weather parameters on Devils Lake, near Devils Lake, ND.

Metrologic instrumentation measures weather parameters on Devils Lake, near Devils Lake, ND.

In February 2005 a visit to a USGS station on Libby Brook near Northfield, Maine revealed a gap between the water level and a layer of ice above. Cold temperatures after a rain event caused the ice layer to form and as water levels dropped the ice layer remained. 

Wisconsin Department of Natural Resources employees measure current velocity and dissolved oxygen as part of a Long Term Resource Monitoring Program (LTRMP) partnership with the Upper Midwest Environmental Sciences Center (UMESC), Upper Mississippi River System (UMRS) Pool 8

Sand and bricks deposited by the tsunami in an area of destruction on the East Coast of Sri Lanka at Kulmunai Kuddi.

Sand and bricks deposited by the tsunami in an area of destruction on the East Coast of Sri Lanka at Kulmunai Kuddi.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, taking measurement of height of tsunami, indicated by gouge mark in tree from debris carried by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, taking measurement of height of tsunami, indicated by gouge mark in tree from debris carried by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, preparing a trench for sampling of tsunami deposit. Leaves on the surface days or weeks after the tsunami and blanket the sand deposited by the tsunami.

Dr. Starin Fernanda, Geological Survey & Mines Bureau of Sri Lanka, preparing a trench for sampling of tsunami deposit. Leaves on the surface days or weeks after the tsunami and blanket the sand deposited by the tsunami.

On January 10, 2005, a landslide struck the community of La Conchita in Ventura County, California, destroying or seriously damaging 36 houses and killing 10 people. For a USGS rerpot on this event, please see USGS Open-file report, "Landslide Hazards at La Conchita, California."

Car transported by the 2004 tsunami in Sri Lanka.

Car transported by the 2004 tsunami in Sri Lanka.

Morton Bay and Red Hill Bay, Salton Sea, California.