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Reconnaissance assessment of erosion and sedimentation in the Canada de los Alamos basin, Los Angeles and Ventura Counties, California

Water Supply Paper 2061
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https://doi.org/10.3133/wsp2061

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Abstract

An assessment of present erosion and sedimentation conditions in the Ca?ada de los Alamos basin was made to aid in estimating the impact of off-road-vehicle use on the sediment yield of the basin. Impacts of off-road vehicles were evaluated by reconnaissance techniques and by comparing the study area with other offroad-vehicle sites in California. Major-storm sediment yields for the basin were estimated using empirical equations developed for the Transverse Ranges and measurements of gully erosion in a representative off-road-vehicle basin. Normal major-storm yields of 73,200 cubic yards would have to be increased to about 98,000 cubic yards to account for the existing level of accelerated erosion caused by off-road vehicles. Long-term sediment yield of the Ca?ada de los Alamos basin upstream from its confluence with Gorman Creek, under present conditions of off-road-vehicle use, is approximately 420 cubic yards per square mile per year--a rate that is considerably lower than a previous estimate of 1,270 cubic yards per square mile per year for the total catchment area above Pyramid Lake.

Suggested Citation

Knott, J.M., 1980, Reconnaissance assessment of erosion and sedimentation in the Canada de los Alamos basin, Los Angeles and Ventura Counties, California: U.S. Geological Survey Water Supply Paper 2061, iv, 26 p. :ill., maps ;23 cm., https://doi.org/10.3133/wsp2061.

Publication type Report
Publication Subtype USGS Numbered Series
Title Reconnaissance assessment of erosion and sedimentation in the Canada de los Alamos basin, Los Angeles and Ventura Counties, California
Series title Water Supply Paper
Series number 2061
DOI 10.3133/wsp2061
Year Published 1980
Language ENGLISH
Publisher U.S. Govt. Print. Off.,
Description iv, 26 p. :ill., maps ;23 cm.
Additional publication details