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A debris flow disharging from the gate at the head of the flume. The USGS debris-flow flume is located in H.J. Andrews Experimental Forest, Oregon. [Location Map]
-- USGS Photo, September 13, 2001

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Debris flow passing instrumented cross section, 66 meters downslope from headgate.
-- USGS Photo, September 13, 2001

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Schematic of instrumented cross sections 33 meters, 66 meters, and 90 meters downslope from headgate.

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Overhead photographs of a debris flow discharging from the flume mouth, 82.5 meters downslope from the headgate.
-- USGS Photos, September 13, 2001

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Summary plot of data acquired at instrumented cross sections.
Includes flow thickness, basal total normal stress, and basal pore pressure, for stations at 33 meters, 66 meters, and 90 meters.

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Overhead photograph of a debris-flow deposit on the runout pad at the base of the flume, with superposed topographic contours.
-- USGS Photo, September 13, 2001

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Isopach map of debris-flow deposit on the runout pad at the base of the flume.

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Close-up photograph of trench excavated through debris-flow deposit near flume mouth.
-- USGS Photo, September 13, 2001

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"Flume Crew" of September 13, 2001, standing at base of flume. Crew members were (from left to right) Julia Griswold, Richard LaHusen, Matthew Logan, Roger Denlinger, and Richard Iverson.
-- USGS Photo, September 13, 2001

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