Debris flows through different forest age classes in the central Oregon Coast Range

C. L. May

Treesearch

Debris flows through different forest age classes in the central Oregon Coast Range

Informally Refereed

Authors:

C. L. May

Year:

2002

Type:

Miscellaneous Publication

Station:

Pacific Southwest Research Station

Source:

Journal of the American Water Resources Association 38(4): 1097-1113.

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Abstract

Abstract - Debris flows in the Pacific Northwest can play a major role in routing sediment and wood stored on hillslopes and in first- through third-order channels and delivering it to higher-order channels. Field surveys following a large regional storm event investigated 53 debris flows in the central Oregon Coast Range to determine relationships among debris flow characteristics and the age class of the surrounding forest. The volume of sediment and wood delivered by debris flows was strongly correlated with runout length. Debris flows that initiated at roads were significantly longer than non road related failures, and road related landslides were an order of magnitude larger than nonroad related landslides.

Keywords

PSW4351, erosion, sedimentation, landslides, debris flows, aquatic ecosystems, forestry, roads, large woody debris

Citation

May, C. L. 2002. Debris flows through different forest age classes in the central Oregon Coast Range. Journal of the American Water Resources Association 38(4): 1097-1113.