Images

Several species of scleractinian corals growing under red mangrove prop roots.

The first USGS streamgage, at Embudo, New Mexico, just turned 125 years old.

Photograph from aerial survey showing the upper parts of the landslide that occurred in northwest Washington on March 22, 2014.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

Photograph from an aerial survey showing the extent and impacts from the landslide in northwest Washington that occurred on March 22, 2014. The survey was conducted by the Washington State Department of Transportation, Washington State Department of Natural Resources, USGS, and King County Sheriff's Office.

USGS scientist Jamie Macy tracks the time-of-arrival of the pulse flow on March 24. 

Colorado River at Southerly International Boundary days before the pulse flow, March 20th, 2014

USGS scientist Jeff Kennedy prepares to measure the change in gravity caused by changing aquifer storage for Minute 319 studies. 

Radio-collared female Carolina Northern Flying Squirrel (Glaucomys sabrinus coloratus) in a high elevation red spruce (Picea rubens) stand on Whitetop Mountain, VA during winter of 2014. 

Ice Jams in Redwater River near Vida, MT.

This giant sequoia is named the Grizzly Giant, the oldest sequoia tree in the Mariposa Grove of Big Trees, located within Yosemite National Park. It is believed to be between 1,900 and 2,400 years old. 

This benchmark is located adjacent to the USGS streamgage on the Merced River located at Pohono Bridge within Yosemite National Park.

A giant sequoia tree within the Mariposa Grove of Big Trees in Yosemite National Park. Giant sequoias are the world's largest single trees by volume.

A single giant sequoia pinecone rests in the bark of its parent. A large sequoia tree can have several thousand pinecones at a time. Although giant sequoia trees are among the largest trees in the world, their pinecones are comparatively small, usually only 2 inches or so.

In this image, the tunnel through the California Tunnel Tree may be seen. The tunnel was cut through the giant sequoia tree in 1895 to allow coaches, and eventually cars, to drive through the tree as part of a marketing stunt. The California Tunnel Tree is the only living giant sequoia with a tunnel cut through it. 

In this image, the west face of El Capitan may be seen from Tunnel View. El Capitan is a granite monolith that rises about 3,000 ft (900 m) from the valley floor and is one of Yosemite National Park's most famous landmarks.

This tree is known as the Fallen Monarch Tree. It fell roughly 300 years ago. Because of the high level of tannins in their bark, giant sequoias are resistant to decay.