Landslide Photo Collections

Searchable USGS Photo and Multimedia Archive with Ordering Information

  • Incision of old deposits at the head of the fan. (Photo taken 7/29/99 by Jeff Coe, U.S. Geological Survey).
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  • View looking up (northeast) from the bottom of the largest channel on the south flank of Mount Parnassus. See geologist for scale. Photo taken 8/4/99 by J.A. Coe.
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  • Fine-grained sediments in channel exposure in middle portion of Watrous Gulch. (Photo taken 7/29/99 by Jeff Coe, U.S. Geological Survey).
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  • Incised channels (rills) in the debris flow source area on the south flank of Mount Parnassus. Relief shown is about 300m. (Photo taken 8/4/99 by Jeff Coe, U.S. Geological Survey).
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  • Map showing the location of July 28 debris flows.
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  • Fresh debris fan deposit just above (north of) Interstate 70. (Photo taken 7/29/99 by Jeff Coe, U.S. Geological Survey).
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  • Talus at the head of the largest incised channel at about 13,000 ft. on the south flank of Mount Parnassus. See gallon sized sample bag for scale. (Photo taken 8/4/99 by Jeff Coe, U.S. Geological Survey).
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  • Nearly vertical face of largest incised channel in source area. See geologist for scale. Interstate 70 in background. (Photo taken 8/4/99 by Jeff Coe, U.S. Geological Survey).
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  • Debris flows in and above the Arapahoe Basin Ski area. (Photo taken 7/29/99 by Ed Harp, U.S. Geological Survey)
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  • Channel incision in lower portion of Watrous Gulch. Note size of boulders in deposits and that channel is incised to bedrock. Photo taken 7/29/99 by J.A. Coe.
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  • Debris flow tracks on the southern flank of Mount Parnassus. Photo taken 7/29/99 by J.A. Coe.
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  • Hanging channel of Watrous Gulch at intersection with unnamed tributary in which the debris flow occurred. View is to the northwest. Note matrix supported levees and about 2 m of incision below base of Watrous Gulch channel. Watrous Gulch above this point did not contribute material to the debris flow. Photo taken 8/4/99 by J.A. Coe.
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  • Debris flow deposit at the base of the northern flank of Woods Mountain. See geologist for scale. Photo taken 8/3/99 by J.A. Coe.
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  • Snowfield and channels on southeast-facing aspect of the south flank of Mount Parnassus. Snowfield is about 40m wide. Photo taken 8/4/99 by J.A. Coe.
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