Older landslides (before Hurricane Mitch) in El Salvador

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-444/pre-mitch.faq.html
Description This cover contains the outlines of selected landslides and debris flows that occurred prior to Hurricane Mitch in the areas where hurricane-induced landslides were mapped. The landslides and debris flows shown in this coverage were mapped using 1:40,00-
Originators Crone, Anthony J.; Baum, Rex L.; Lidke, David J.; Sather, Damon N.D.; Bradley, Lee-Ann; and Tarr, Arthur C.
Publication U.S. Geological Survey Open-File Report 01-444

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Landslide

Polygon delineating the planimetric area of a landslide found in coverages whose names begin with ls, ols, or yls

Label Definition
LS 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.

Mapped area

Polygon in the mm coverages, used to indicate the method by which landslides were identified, found in coverages whose names begin with mm.

Label Definition
MM Mapping method