Images

Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel.  Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.

Nathan Chellman, Mike Jayred and Lucas (Dog) stage equipment on the drilling platform.

Mike Jayred and Nathan Chellman work to level the ice drill to begin taking the core.  Craig Lee stabilizes the platform.

Creek filled with Algal Toxins is surrounded by plant life on both banks. Trees line the background.

Photo taken on country road showing a field with green plants. Tree line the background on a partly cloudly day.

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

A Horned Puffin taking off from the water

Horned Puffin, one of the species affected by a recent seabird die-off in the Pribilof Islands, AK. Near Chisik Island in Lower Cook Inlet, Alaska

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.

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.

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.

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.

At the summit of Kīlauea, the weather cleared, but inflation turned to deflation and the lava lake level dropped, so the spattering that had been visible from overlooks in Hawai‘i Volcanoes National Park the past two days is no longer visible today. But, it was a beautiful day to view Halema‘uma‘u Crater from the Jaggar Museum Overlook!

The City of Gary, Indiana and the Gary Sanitary District are committed to implementing green infrastructure solutions to reduce storm water inputs to their combined sewer system, with the goal of decreasing the volume of storm water to be treated.

Kīlauea Volcano's active lava flow continues to bury more of the emergency access route (Chain of Craters Road) in Hawai‘i Volcanoes National Park. Early this morning, slow-moving breakouts were oozing across the road on the west side of the flow.

This hand-tinted telephoto image of Kīlauea Volcano's "Old Faithful" lava fountain in Halema‘uma‘u Crater was taken by volcanologist Frank A. Perret on July 23, 1911. USGS-Hawaiian Volcano Observatory photo archives.

"The whole Eastern Half of the lake is in a state of continuous activity with Old Faithful playing 10 to 20 feet every 35 to 45 seconds." J.M. Lydgate wrote these words and sketched this map of Halema‘uma‘u Crater in the Volcano House Register (a collection of hotel guest comments) in July 1909 to document his observations of Kīlauea Volcano.

Kīlauea Volcano's older "61g" lava flows have now inflated (left side of photo), creating jagged terrain that rises as much as 3 m (10 ft) above the road. Today, new lava (right) was covering additional areas of the gravel road.

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

USGS historical photogrpah by Richard B. Dole, 1913.

Tamarisk leaves regrow following defoliation by the biological control agent, tamarisk leaf beetle (Diorhabda spp.).

Retrieval and Results

Processed data are exported to two- and three- dimensional mapping applications to visualize water-quality distributions.  Combined with observed water currents and bathymetric contours, this allows for an integrated analysis of the system under investigation.