Tuesday, September 29, 2009

Plausible extents of landslide-dammed lakes in The Hole in the Ground

I have developed polygons showing likely extents of lakes related to both lobes of the Doublespring Landslide Complex on the Owyhee River. Using a combination of LiDAR data, ArcGIS, and GlobalMapper in conjunction with the highest plausible geomorphic evidence of fluvial overtopping the following lakes result:

East Spring Landslide: 878 m lake elevation.
West Spring Landslide: 868 m lake elevation.
(it is possible that both are a few meters low...need some field data)

The correspondence / lack of correspondence of these lakes with various upstream landforms and deposits is surprising.

Posted via email from Fresh Geologic Froth

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