Images

USGS scientists created outdoor testing plots where large squares of biocrusts were exposed to different warming and precipitation factors over time.

A lidar point cloud of the National Mall, Washington, D.C. Photograph Credit: Jason Stoker, USGS

Neil Yobbi, U.S. Geological Survey hydrologic technician, uses an Acoustic Doppler Velocimeter to measure stream flow on Curlew Creek in Tampa, Florida. While Hurricane Hermine might have made landfall almost 200 miles away in St.

Boat owners sought protection for their vessels in sheltered Hurricane Hole, but Hurricane Irma sunk and beached many boats, likely damaging corals. Photo: Caroline Rogers, USGS, 2017

Franklin Mountains near the Hueco Bolson study area near El Paso, Texas, September 2016. Photograph by Monica Langhorst, U.S. Geological Survey.

U.S. Geological Survey Scientific Investigations Report 2020–5056

Fog along the Yukon River showing a Black Spruce dominated forest in the foreground, which is prone to wildfire.  Photo by Bruce Wylie, USGS

U.S. Geological Survey field sampling crew arriving at a groundwater well that was sampled in the Hueco Bolson study area near El Paso, Texas, September 2016. Photograph by Chris Braun, U.S. Geological Survey.

U.S. Geological Survey Scientific Investigations Report 2020–5056

U.S. Geological Survey streamflow-gaging station 08111000 Navasota River near Bryan, Texas, looking upstream from U.S. Highway 190 bridge, August 27, 1975.

SIR 2009–5174

Daniel McCay and Chris Henry, USGS hydrologic technicians, use a level to draw a line on a high-water mark August 26. In most circumstances, when a high-water mark is flagged it would then be surveyed with GPS equipment to obtain its exact coordinates and elevation.

Chris Henry and Daniel McCay, USGS hydrologic technicians, use GPS equipment to survey a high-water mark outside of a flooded elementary school in Denham Springs, Louisiana, August 28. This school was located in one of the hardest hit flood areas and the blue line simulates how high the water was at its peak during this historic flood.

Jonathan Gillip, USGS hydrologist, documents a high-water mark he flagged near a damage retirement community in Denham Springs, Louisiana, August 26. So far, USGS teams have flagged and surveyed more than 400 high-watermarks across southern Louisiana.

Daniel McCay and Chris Henry, U.S. Geological Survey hydrologic technicians, search a neighborhood south of Denham Springs, Louisiana, for high-water marks August 26. The term high-water mark refers to the debris flood waters will leave on walls, buildings and trees.

Mt. Lyell and view of Vogelsang Pass, Yosemite National Park, 1913

USGS historical photogrpah by Richard B. Dole, 1913.

Flow along 4H Club Rd under I-12 on August 15, 2016.

The view on South Sherwood Forest Blvd near the USGS Louisiana Water Science Center office on August 15, 2016.

Sinabung volcano in Indonesia on August 14, 2016. Photograph credit: Christoph Kern, USGS

Sinabung volcano in Indonesia on August 14, 2016. Photograph credit: Christoph Kern, USGS

Sinabung volcano in Indonesia on August 14, 2016. Photograph credit: Christoph Kern, USGS

Monitoring equipment being installed at Sinabung volcano in Indonesia on August 14, 2016. Photograph credit: Christoph Kern, USGS

A flooded house near the confluence of the Comite and Amite Rivers near Denham Springs, LA.

A flooded neighborhood near the confluence of the Comite and Amite Rivers near Denham Springs, LA.