A comparison of several methods for erosion measurement on cut and fill slopes of a logging road in the Oregon Coast Range Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/0p0968964

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  • The catchment-filter, soil erosion gage, macroprofile, and spike and washer techniques for erosion measurement were compared on six plots along a newly constructed logging road in the Oregon Coast Range during the winter of 1965-66. Three plots were located on a cut slope; three plots were on a fill slope. Erosion occurred uniformly over each plot. Any one technique could not be used to predict the results of any other. The catchment-filter technique was accepted as a standard. The data indicate that the soil erosion gage and macroprofile techniques may have application in studying the erosion process, but should not be used to measure amounts of erosion. In this study the spike and washer technique recorded deposition while the other techniques indicated erosion. The techniques were not affected by differences between the two slopes. The steep cut slope eroded three times as much as the gentler fill slope during the study period. From limited data frost appeared to have an influence on erosion from steep cut slopes. No significant relation was found between rainfall and erosion. The first fall storm caused the greatest rate of erosion from the fill slope. The erosion process is discussed briefly. The historic development and current status of erodibility indices are also presented.
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