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Three Sisters, Oregon
Leveling Images, August 2006

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Sisters06_south_sister_from_south_08-23-06.jpg
South Sister volcano as seen from the south.
USGS Photograph taken on August 23, 2006, by Carolyn Driedger.
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Sisters06_middle_sister_south_sister_08-25-06.jpg
Middle Sister (left) and South Sister (right).
USGS Photograph taken on August 25, 2006, by Carolyn Driedger.
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Sisters06_USGS_leveling_setting_up_08-24-06.jpg
USGS Scientist setting up leveling gun between two rods.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_leveling_taking_reading_08-24-06.jpg
USGS Scientist taking reading.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_with_leveling_gun_08-24-06.jpg
USGS Scientist with leveling gun.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_scientist_DanDzurisin_leveling_gun_08-24-06.jpg
U.S. Geological Survey scientist, Dan Dzurisin, using leveling gun at South Sister volcano, Oregon.
USGS Photograph taken on August 24, 2006, by Carolyn Driedger.
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Sisters06_USGS_leveling_equipment_setup_08-24-06.jpg
U.S. Geological Survey scientists with leveling equipment setup, at South Sister volcano, Oregon.
USGS Photograph taken on August 24, 2006, by Carolyn Driedger.
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Sisters06_USGS_aiming_leveling_gun_08-24-06.jpg
U.S. Geological Survey scientist, Dan Dzurisin, aiming leveling gun at South Sister volcano, Oregon.
USGS Photograph taken on August 24, 2006, by Carolyn Driedger.
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Sisters06_USGS_reading_leveling_gun_08-24-06.jpg
U.S. Geological Survey scientist, Dan Dzurisin, reading leveling gun at South Sister volcano, Oregon.
USGS Photograph taken on August 24, 2006, by Carolyn Driedger.
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Sisters06_USGS_leveling_crew_08-24-06.jpg
U.S. Geological Survey scientists at South Sister volcano, Oregon.
USGS Photograph taken on August 24, 2006, by Carolyn Driedger.
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Sisters06_USGS_carrying_leveling_rods_08-24-06.jpg
USGS Scientist carrying leveling rod to next station. Another leveling rod is setup in the foreground.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_carrying_leveling_gun_08-24-06.jpg
USGS Scientist carrying leveling gun to next station. A leveling rod is setup in the foreground.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_leveling_south_sister_08-24-06.jpg
USGS Scientist leveling at South Sister.
USGS Photograph taken on August 24, 2006, by David Wieprecht.
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Sisters06_USGS_leveling_crew_in_woods_08-25-06.jpg
USGS Scientists leveling through the woods at South Sister.
USGS Photograph taken on August 25, 2006, by David Wieprecht.
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Sisters06_USGS_leveling_08-26-06.jpg
USGS Scientist at leveling gun.
USGS Photograph taken on August 26, 2006, by David Wieprecht.
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Sisters06_USGS_leveling_rod_gun_08-26-06.jpg
USGS Scientist, leveling rod and gun.
USGS Photograph taken on August 26, 2006, by David Wieprecht.
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Sisters06_USGS_along_leveling_line_08-26-06.jpg
USGS Scientist at leveling gun.
USGS Photograph taken on August 26, 2006, by David Wieprecht.
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08/30/06, Lyn Topinka