Area	Basinwide/Regional
Topic	Sediment: Matthews Landslides by Land-Use Big River Basins 1921-2000

 

Caption:  The chart above shows the total number of delivered landslides per land-use area in the Big River basin for the period 1921-2000. Estimates were generated from aerial photographs by Matthews and Associates (2001). Mass wasting is largely active in harvest areas and road fill. Matthews and Associates (2001) state: "Significant construction of new roads has led to increasing sediment yields from road surface erosion, despite improved practices. Under current conditions (1989-1999 period), management-related sediment delivery is estimated to be 51.7% of the total input." See Info Links for more background information and links to references.

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