Area	Lower Big River
Topic	Sediment: Matthews Lower Big Basin Landslides Volumes 1921-2000

 

Caption:  The chart above shows Matthews and Associates (2001) total computed sediment delivery quantities (tons) for Lower Big River sub-basin per analysis period. Estimates are generated from aerial photographs. The largest landslide sediment contributions appear to have occurred during the 1921-1936 and 1953-1965 periods. Matthews and Associates (2001) note, the actual number of slides in the 1921-1936 period is likely an underestimate, since 1936 aerial photo coverage was unavailable for the eastern half of the watershed. See Info Links for more background information and links to references.

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