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Mount Hood photographed near Parkdale, Oregon....
July 24, 2017

Mount Hood photographed near Parkdale, OR.

Mount Hood photographed near Parkdale, Oregon.

Cumulative number of earthquakes (counts) that have occurred at Mou...
May 16, 2016

Cumulative number of earthquakes (counts) that have occurred at Mou...

The red line shows the total number of earthquakes that have occurred at Mount Hood between the year 2000 and May 16, 2016. During this period, there have been 829 earthquakes greater than magnitude 1. Note the number of earthquakes during the 2002 swarm.

Mount Hood Spectrograms for August 21, 2015....
August 21, 2015

Mount Hood Spectrograms for Aug. 21, 2015.

Mount Hood Spectrograms for August 21, 2015.

View of the White River from the OR35 bridge after the August debri...
August 21, 2015

View of White River from the OR35 bridge after the Aug. debris flows

View from the OR35 bridge over the White River looking downstream. Glistening areas are deposits from recent debris flows.

Sediment-laden White River 11 km downstream of the OR35 bridge. Hea...
August 21, 2015

Sediment-laden White River 11 km downstream of the OR35 bridge. Hea...

Sediment-laden White River 11 km downstream of the OR35 bridge. Heavy rains resulted in high-sediment loads within this river, which drains Mount Hood, Oregon.

Volcano monitoring station with external GPS antenna and digital se...
July 17, 2015

Volcano monitoring station with external GPS antenna and digital se...

Volcano monitoring station with external GPS antenna and digital seismometer (buried). Fiberglass enclosure houses power supply and communications, and is designed to withstand harsh weather.

snow-covered Mt. Hood volcano on the horizon overlooking tall building in city of Portland
December 31, 2012

Mount Hood

Mount Hood dominates the skyline outside Portland, Oregon on a clear day. A major eruption of Mount Hood would pose a great hazard to the regional economy.

snow-capped volcano, Mount Hood on the horizon, with city of Portland, Oregon in foreground
December 31, 2012

Mount Hood and Portland, Oregon

Mount Hood in the not-so-far distance beyond downtown Portland, Oregon. Photograph taken at the top of the Portland Aerial Tram line on Marquam Hill.

Mount Hood looms above the Columbia River and Glenn Jackson Bridge....
December 30, 2012

Mount Hood looms above the Columbia River and Glenn Jackson Bridge....

Mount Hood looms above the Columbia River and Glenn Jackson Bridge. Excess sediment from eruptions of Mount Hood have choked the river and caused flooding in the past.

Mount Hood with Portland International Airport (Oregon) in the fore...
October 31, 2012

Mount Hood with Portland International Airport (OR) in the foregrou...

Mount Hood with Portland International Airport (Oregon) in the foreground. An ash-producing eruption of Mount Hood could ground air traffic and significantly impact commerce in surrounding states.

Mount Hood with Portland, Oregon in the foreground.
May 23, 2012

Mount Hood dominates the skyline outside of Portland, Oregon

A major eruption of Mount Hood would pose a great hazard to the regional economy.