|On July 28, 1999, about 480 debris flows were triggered by an afternoon thunderstorm along the Continental Divide in Clear Creek and Summit counties in the central Front Range of Colorado. This cover shows the outlines of debris-flow source areas, travel
|Godt, Jonathan W. and Coe, Jeffrey A.
|U.S. Geological Survey Open-File Report 03-050
Polygon delineating the planimetric area of a landslide found in coverages whose names begin with ls, ols, or yls
|Some regions within landslides were apparently unaffected by the landslide (that is, they represent areas bypassed by the landslide but are within its outer boundaries) This attribute is used to distinguish those areas from the landslide itself.
Polygon in the mm coverages, used to indicate the method by which landslides were identified, found in coverages whose names begin with mm.