Images

A surface expression of geothermal activity.

A surface expression of geothermal activity.

A surface expression of geothermal activity.

Redoubt Volcano summit crater during eruption. This was taken just after explosive activity at redoubt ceased. There were still significant gas and steam emissions occurring. Iliamna Volcano to the south of Redoubt is visible in the background.

This photos was staged to simulate how scientists monitor data. 

Secretary of the Interior Ken Salazar announced the U.S. Geological Survey will fund \$29.4 million in earthquake network upgrades nationwide through the American Recovery and Reinvestment Act of 2009.

The Bridge and Train Trestle across the Alapaha provide USGS hydrologic technicians and emergency crews a good survey of flooding conditions for making measurements.

USGS hydrologic technicians survey the volume of water discharging across flooded state road 141 from the Withlacoochee River near Lee, Florida (Monday, April 13, 2009).
Courtesy of the Florida Fish and Wildlife Conservation Commission

The dry landscape of northwest Florida floods with extreme highwater from the Withlacoochee River.

The rural landscape in northwest Florida is inundated by floodwaters of the Alapaha River.

Debris from the Withlacoochee River near Lee, Florida, downstream from Pinetta, Florida, where the record gage height was recorded last week. (Monday, April 13, 2009)

Hydrologic technicians measure the overflow from the swollen Withlacoochee River, a tributary of Florida's Suwannee River, during a flood in April 2009.

Flooding on the Cannonball River at Breien, North Dakota.

Redoubt Volcano viewed from the northwest following the April 4, 2009 eruption (Event 19). Steam rises from the summit crater, pyroclastic flow and surge deposits drape the flanks, and lahar deposits cover the Drift River Valley. 

From the 2009 eruption of Redoubt Volcano. The original photo can be found at: http://www.avo.alaska.edu/images/image.php?id=17800

Beaver Creek flowing over road, looking south, near Linton, ND.

Bridge over the Heart River during flood, near Mandan, North Dakota, spring 2009.

Aftermath of flooding on the Knife River near Hazen, North Dakota, April 2009.

Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.

Photograph of impacts from the volcanic ash fall out in Nikiski, AK from Redoubt volcano. This plume was generated during the March 28, 15:29 AKDT, 2009 event, and ash fall began at approximately 16:16 AKDT and lasted maybe 5 minutes.

Community engagement and emergency preparedness can mitigate exposure to volcanic events.  Sign at 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. AVO photo.