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Both Powell’s crew and this year’s modern expedition camped along the river with views of cottonwood galleries. 

USGS scientists collected the adult life stage of emerging aquatic insects each evening of the recent Sesquicentennial Colorado River Exploring Expedition.

HVO field engineers and staff conducted quarterly work at a deep borehole, known as the Keller Well, at the summit of Kīlauea Volcano today (Sept. 24). They lowered a sensor into the well to measure the distance between the ground surface and the top of the water table, which was 505 m (1657 ft) below the ground surface today.

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea, Alaska  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

A storm-tide sensor deployed on Florida's Indian River Lagoon, at Indian River Drive in St. Lucie County, on Aug. 30, 2019 in preparation for Hurricane Dorian. NOTE: Though the story is about the Carolinas, the photo is from Florida. No photos of the Carolinas deployment were available at the time this story was published.

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.

This timelapse video covers about 25 minutes and shows the circulation in the water pond in Halema‘uma‘u. There appears to be an influx of water along the southern shoreline (right side in this image). A broader eastward flow of water (towards the top of the image) is evident. The video is shown twice.

White-nose syndrome (WNS) has continued to spread rapidly. Bats with white-nose syndrome have been confirmed in 33 states and seven Canadian provinces as of August 2019.

Windfarm at Quinhagak, Alaska. In this photo, the telephone poles are leaning due to permafrost thaw.

The USGS and partners study the effects of climate change on the Greater Yellowstone Ecosystem. This image shows a research raft on Spider Lake, Wind River Indian Reservation, Wind River Range, Wyoming.

Taken on the last full day of the Cape Cod Bay 2019 Survey, from the wheel house of the boat at about 5:45 am.

Taken on the last full day of the Cape Cod Bay 2019 Survey, from the wheel house of the boat at about 5:45 am.

A scenic view of the Indian Peaks Wilderness Area located in Colorado. The hike begins at the Long Lake Trail-head and guides to Lake Isabelle at 10,868 ft  (3313 m).

USGS technicial Scott Lydeen climbing the tower at the Strawberry Peak seismic station tower, part of the Southern California Seismic Network.

Images taken on September 10 and 14 show the slight rise in water level, most obvious by comparing the rock marked with an arrow in each photo. USGS photos by M. Patrick.

Northeast Region Photo Contest Winner | Sept 2019 | Honorable Mention
Sunrise from the bridge of the M/V Warren Jr. while surveying Cape Cod Bay, MA

This video is shown at 30x speed and highlights the changing activity on the surface of the water pond. Steaming shifts in the wind, and circulation of the water is evident in areas of sharp color boundaries.