Area	Upper Big River
Topic	Sediment: Matthews Landslides Volume Delivered, Upper Basin 1921-2000

 

Caption:  The chart above shows Matthews and Associates (2001) total computed sediment delivery quantities for each Upper Big River sub-basin per analysis period. Estimates are generated from aerial photographs. The largest landslide sediment contributions appear to have occurred during the 1937-1952 and 1953-1965 periods. Current slide activity continues to contribute large volumes of sediment. 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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To view the table with the chart's data, click Chart Table web page.
To download the table with the chart's data, click slides_vol_tons_period_ub.dbf (size 871 bytes) .
To see meta information about the data table used for this topic click here
To view the table with the chart's source data, click Source Table web page.
To download the table with the chart's source data, click slides_vol_tons_period_allsubs.dbf (size 2,118 bytes)
 
 

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