http://gallery.usgs.gov/images/logos/usgs_only.jpg http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif http://gallery.usgs.gov/ http://gallery.usgs.gov/photos/05_10_2013_j5Eq27Thg0_05_10_2013_0 USGS hydrologic technician Amy Simonson surveying a high-water mark on Liberty Island, New York.

]]> http://gallery.usgs.gov/photos/05_10_2013_j5Eq27Thg0_05_10_2013_1 USGS hydrologic technician Amy Simonson surveying a high-water mark on Liberty Island, New York.

]]> http://gallery.usgs.gov/photos/05_10_2013_j5Eq27Thg0_05_10_2013_2 USGS hydrologic technician Amy Simonson surveying a high-water mark on Liberty Island, New York.

]]> http://gallery.usgs.gov/photos/05_10_2013_j5Eq27Thg0_05_10_2013_3 USGS hydrologist Michael Noll surveying a high-water mark on Ellis Island, New York.

]]> http://gallery.usgs.gov/photos/05_10_2013_j5Eq27Thg0_05_10_2013_4 USGS hydrologic technician Amy Simonson surveying a high-water mark on Liberty Island, New York.

]]> http://gallery.usgs.gov/photos/05_10_2013_n63Umy8LKf_05_10_2013_0 Red River floodwater in downtown Fargo, N.D., overcame a public trail sign in April 2013.

]]> http://gallery.usgs.gov/photos/05_10_2013_n63Umy8LKf_05_10_2013_1 USGS hydrologist Dan Thomas places an acoustic Doppler current profiler (ADCP) into Fargo, N.D., floodwaters to measure streamflow on the Red River.

]]> http://gallery.usgs.gov/photos/05_10_2013_n63Umy8LKf_05_10_2013_2 USGS hydrologist Dan Thomas speaks with media about USGS flood response efforts in Fargo, N.D.

]]> http://gallery.usgs.gov/photos/05_10_2013_n63Umy8LKf_05_10_2013_3 A team of USGS hydrologists and technicians prepares to take an acoustic Doppler current profiler (ADCP) out on the Red River in downtown Fargo, N.D., to measure streamflow during the 2013 flood.

]]> http://gallery.usgs.gov/photos/05_10_2013_n63Umy8LKf_05_10_2013_4 A high water marker is submerged by the rising Red River during flooding in Fargo, N.D.

]]> http://gallery.usgs.gov/photos/04_30_2013_di8Kco4BAu_04_30_2013_0 USGS hydrologist Dan Thomas shows media how the acoustic Doppler current profiler (on the right) measures streamflow on the Red River in Fargo.

]]> http://gallery.usgs.gov/photos/04_30_2013_di8Kco4BAu_04_30_2013_1 The USGS Red River of the North at Fargo streamgage in Fargo, N.D., takes automatic water level measurements every 15 minutes.

]]> http://gallery.usgs.gov/photos/04_30_2013_di8Kco4BAu_04_30_2013_2 USGS hydrologists measuring streamflow on the Red River during spring flooding in Fargo.

]]> http://gallery.usgs.gov/photos/04_30_2013_di8Kco4BAu_04_30_2013_3 USGS hydrologists return from measuring streamflow on the Red River in Fargo, N.D. The USGS Red River of the North at Fargo streamgage can be seen on the right in the image.

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_0 SEM (Scanning electron Microscope) image of a vesicular ash particle erupted by Augustine volcano on January 13, 2006. The ash sample was collected during the ashfall in Homer, Alaska by John Paskievitch, AVO. The image was acquired by Pavel Izbekov using ISI-40 Scanning Electron Microscope at the Advanced Instrumentation Laboratory, University of Alaska Fairbanks. 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_1 Fieldwork northeast of Redoubt volcano. Kristi Wallace measuring and collecting ash samples from the current eruption.

 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_2 Augustine volcano viewed from the west.

 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_3 Photo of Redoubt and vicinity taken from the gas/obs fixed-wing flight. 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_4 Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_5 Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater. 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_7 Cyrus Read installing the new, zoomable web camera at the AVO research hut north of Redoubt Volcano.

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_8 Crater Creek warm springs, Mount Spurr Volcano. Chris Waythomas measuring temperature, pH, and conductivity.

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_9 Temphra sampling done by Kristi Wallace. 

]]> http://gallery.usgs.gov/photos/03_29_2013_otk7Nay4LH_03_29_2013_10 Nikiski Fire Department on March 28, 2009. Ash fall up to a millimeter thick from Redoubt volcano occurred twice during the 2009 eruption on this area (March 26 and March 28). 

 

]]> http://gallery.usgs.gov/photos/03_11_2013_hmd5Gsr11A_03_11_2013_0 Kīlauea Volcano's summit vent within Halema‘uma‘u Crater was about 115 feet in diameter in April 2008, a month after it opened. 

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