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Director David Applegate Speaks at a Gathering in Ashland Wisconsin
USGS Director David Applegate Delivers Remarks During the Celebration of USGS Advanced Technologies in Fisheries
USGS Director David Applegate Delivers Remarks During the Celebration of USGS Advanced Technologies in Fisheries
USGS Director David Applegate Delivers Remarks During the Celebration of USGS Advanced Technologies in Fisheries

USGS Director David Applegate delivers remarks during the celebration of USGS advanced technologies in fisheries science on the Great Lakes, August 9, 2022, in Ashland, Wisconsin. Photo credit: Andrea Miehls, USGS.

Scientists stand near a large, car-sized perched boulder sitting on bedrock.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Noah Lindberg and Thomas Pratt observe and measure features of a precariously balanced rock in the northeastern U.S.

Scientist sitting on top of a car sized boulder sitting on bedrock with another scientist standing nearby.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Noah Lindberg installing a seismometer on a balanced rock on Azure Mountain in the Adirondacks. 

Person laying on bedrock next to a large boulder.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Devin McPhillips closely examines the base of a rock perched on the edge of a cliff at Little Sawyer Mountain in the Adirondacks. 

Two scientists on either side of a large boulder perched on bedrock in the forest with scientific instruments.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Devin McPhillips collecting LIDAR for 3D modeling of the rock, while Tom Pratt is in the foreground taking pictures for 3D modeling using photogrammetry. 

Devin McPhillips collecting LIDAR for 3D modeling of the rock, while Tom Pratt is in the foreground taking pictures for 3D modeling using photogrammetry. 

Scientist sitting on top of a car sized boulder sitting on bedrock with green foliage all around
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
A massive tree stump takes up most of the frame while a scientist poses on the side.
Belle Philibosian examines a redwood stump.
Belle Philibosian examines a redwood stump.
Belle Philibosian examines a redwood stump.

Belle Philibosian with the USGS Earthquake Science Center examines a redwood stump along the north coast section of the San Andreas Fault near Gualala, California in late August 2022.  

Belle Philibosian with the USGS Earthquake Science Center examines a redwood stump along the north coast section of the San Andreas Fault near Gualala, California in late August 2022.  

two tree cutters stand among skinny trees and a tree stump
Sawyers cutting into a leaning redwood snag.
Sawyers cutting into a leaning redwood snag.
Sawyers cutting into a leaning redwood snag.

Sawyers cutting into a leaning redwood snag. The snag is located directly on the San Andreas fault scarp (slope down to the left) and the leaning may have occurred during an earthquake.

Sawyers cutting into a leaning redwood snag. The snag is located directly on the San Andreas fault scarp (slope down to the left) and the leaning may have occurred during an earthquake.

Large, car-sized boulder sitting on bedrock with green trees in the background.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Photo of a precariously balanced rock in northeastern U.S. These rocks will help scientists understand more about the maximum earthquake shaking to have occurred in the region.

Photo of a precariously balanced rock in northeastern U.S. These rocks will help scientists understand more about the maximum earthquake shaking to have occurred in the region.

Scientist next to large boulder perched on bedrock
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Overview of water quality in Principal Aquifers in the U.S. with colored pie charts showing data
Overview of water quality in Principal Aquifers
Overview of water quality in Principal Aquifers
Overview of water quality in Principal Aquifers

Overview of water quality in Principal Aquifers. The colored pie charts indicate the proportion of the area studied that contained a constituent in untreated groundwater at a concentration that exceeds a human-health benchmark for drinking water. (Public domain.)

Overview of water quality in Principal Aquifers. The colored pie charts indicate the proportion of the area studied that contained a constituent in untreated groundwater at a concentration that exceeds a human-health benchmark for drinking water. (Public domain.)

Person on sitting on top of a car-sized boulder perched on bedrock
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Noah Lindberg installing a seismometer on a balanced rock along Blue Ridge Road in the Adirondacks. 

Dos científicos del Servicio Geológico de los Estados Unidos instalando un equipo para sondeos de una costa en Dorado, Puerto
Dos científicos del Servicio Geológico de los Estados Unidos instalando un equipo para sondeos de una costa
Dos científicos del Servicio Geológico de los Estados Unidos instalando un equipo para sondeos de una costa
Dos científicos del Servicio Geológico de los Estados Unidos instalando un equipo para sondeos de una costa

Dos científicos del Servicio Geológico de los Estados Unidos instalando un equipo para sondeos de una costa en Dorado, Puerto Rico. Este equipo monitoreará como la playa y la línea costera cambian a través del tiempo. Imagen de USGS. 

Two scientists crouch next to a large car-sized boulder perched on bedrock.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Noah Lindberg and Devin McPhillips examining a precariously balanced rock on Mt. Elmore, Vermont. 

Map points to a car-sized rock sitting on top of bedrock.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Devin McPhillips points to the contact point beneath a precariously balanced rock in northeastern U.S.

Researchers stand around as they watch sawyers cutting into a leaning redwood snag.
Researchers watch sawyers cutting into a leaning redwood snag.
Researchers watch sawyers cutting into a leaning redwood snag.
Researchers watch sawyers cutting into a leaning redwood snag.

Belle Philibosian, Nick Cunetta, and Allyson Carroll watch sawyers cutting into a leaning redwood snag. The snag is located directly on the San Andreas fault scarp (slope down to the right) and the leaning may have occurred during an earthquake.

Belle Philibosian, Nick Cunetta, and Allyson Carroll watch sawyers cutting into a leaning redwood snag. The snag is located directly on the San Andreas fault scarp (slope down to the right) and the leaning may have occurred during an earthquake.

Photo of a precariously balanced rock by Noah Lindberg from the northeastern U.S. taken during field work in August, 2022.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.
Studying precariously balanced rocks in northeastern U.S.

Photo of a precariously balanced rock by Noah Lindberg from the northeastern U.S. taken during field work in August, 2022.

Two U.S. Geological Survey scientists set-up equipment to survey a beach in Dorado, Puerto Rico. This equipment will monitor how the beach and shoreline change through time. USGS Image.
USGS scientists set-up equipment on beach
USGS scientists set-up equipment on beach
USGS scientists set-up equipment on beach

Two U.S. Geological Survey scientists set-up equipment to survey a beach in Dorado, Puerto Rico. This equipment will monitor how the beach and shoreline change through time. USGS Image. 

Two U.S. Geological Survey scientists set-up equipment to survey a beach in Dorado, Puerto Rico. This equipment will monitor how the beach and shoreline change through time. USGS Image. 

Matrix from the Great Salt Hydro Mapper webpage showing natural resource characteristics at different lake levels.
Utah Department of Natural Resources Great Salt Lake Characteristics Matrix
Utah Department of Natural Resources Great Salt Lake Characteristics Matrix
Utah Department of Natural Resources Great Salt Lake Characteristics Matrix

Matrix from the Great Salt Hydro Mapper webpage on July 27th, 2022. The matrix shows a summary of resource characteristics at different lake elevation levels. Areas shaded green indicate the lake level is beneficial; areas shaded orange indicate the lake level is adverse for the resource.

Matrix from the Great Salt Hydro Mapper webpage on July 27th, 2022. The matrix shows a summary of resource characteristics at different lake elevation levels. Areas shaded green indicate the lake level is beneficial; areas shaded orange indicate the lake level is adverse for the resource.

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