Images

Photo of a saltmarsh platform showing vegetation on on top of the banks of a tidal creek. It shows the general setting of a saltmarshes that experience wet and dry periods with the tides within a day.

Humboldt State University Assistant Professor Melanie Michalak (squatting) and California State Geological Survey scientist Jay Patton (standing, center) explaining core stratigraphy within Humboldt slough and evidence for past tsunami inundation.

USGS ecologist and drone pilot Chase Freeman flies a drone for at Whiskeytown National Recreation Area to assess the impacts of the 2018 Carr Fire, while technician Kylie Mosher looks on.

Photograph showing dipping sedimentary rocks of the Newark Basin in southeastern Pennsylvania. Taken during the 2018 Field Conference of Pennsylvania Geologists. 

This thermal map was constructed by merging about 1300 images from a morning helicopter overflight, and shows the distribution of some of the prominent thermal features in the caldera. The most conspicuous area is a region of high temperatures in the deepest part of the collapse depression, in the area of Halema‘uma‘u.

NAGT summer intern, Kelly Sanks, prepares to collect salt marsh sediment cores with her advisor, Dr. Meagan Gonneea (Cape Cod, MA).

Tanana River at Big Delta sonar and debris on a bridge

This flood event viewer map, dated Oct. 3, 2018, shows the extent and type of information collected by USGS hydrologists in North and South Carolina in the wake of historic flooding brought on by Hurricane Florence.

A cyanobacterial bloom in late fall at Ash River Harbor in Kabetogama Lake, Voyageurs National Park

Cyanobacterial bloom at Kabetogama Lake in Voyageurs National Park

Cyanobacterial bloom in Kabetogama Lake with fall leaves in the background

Flooding at Vekol Wash today, south of Phoenix, following remnant rains from Hurricane Rosa. 

Typed information on back of photograph: Major John Wesley Powell, a series of three photos, number 1.

View looking west from the Brushy Mountains, NC, to the Blue Ridge escarpment and highlands of the Blue Ridge.  The high jagged peak toward the left side of the photo is Grandfather Mountain and is covered by a winter snow. 

Gage house for Spearfish Creek at Spearfish, SD (USGS streamgage 06431500). This site was established as a U.S. Geological Survey streamgage on October 9, 1946, and is operated in cooperation with South Dakota Department of Natural Resources. Streamgages are visited by a USGS hydrologic technician on 6-week intervals throughout the year.

Staff gage for Spearfish Creek at Spearfish, SD (USGS streamgage 06431500). This site was established as a U.S. Geological Survey streamgage on October 9, 1946, and is operated in cooperation with South Dakota Department of Natural Resources.

Glen Canyon Dam jet tubes releasing water into the Colorado River for a November 2018 high flow experiment. The increase in flow of the Colorado River downstream of the dam mobilizes sand at the bottom of the river and that sand rebuilds sandbars in Grand Canyon.

Looking down on Glen Canyon Dam jet tubes releasing water into the Colorado River for a November 2018 high flow experiment. The increase in flow of the Colorado River downstream of the dam mobilizes sand at the bottom of the river and that sand rebuilds sandbars in Grand Canyon.

Shown in this photo is Hydrologic Technician Sam Banas performing an electric tape down measurement of a groundwater well. The site ID is: 422906072124301 MA-PHW 16 Petersham, MA

View from bridge of USGS gage 07241800, North Canadian River at Shawnee, OK

Satellite image of Taku Glacier in October 1, 2018. The Norris Glacier can be seen on the lower left hand corner and the Hole-in-the-Wall Glacier in the upper center portion of the image.