A Study of Vegetation on Revetments Sacramento River Bank Protection Project. Phase 1. Literature Review and Pilot Study
1990
Shields, F. D | Jr. | Ethridge, Loyde T. | Waller, Terry N.
This report describes methods and findings of a 2-year study of the effect of volunteer woody vegetation on durability of Sacramento River revetments. The study consisted of a literature review, analysis of effects of woody vegetation on revetment performance during the 1986 flood using historical records and aerial photos, and visual inspection of revetments along the Sacramento River between river mile (RM) 84.5 and 119. Federal and Corps of Engineers (CE) regulations address removal of woody vegetation from levee slopes and flood control channels, but vegetation on revetted banks that are not part of a levee is not specifically prohibited. However, current CE maintenance standards as applied to the Sacramento River flood control project prohibit wood vegetation on revetments. Primary reasons that vegetation is undesirable on revetment include potential reduction of channel conveyance, impairment of revetment visibility for inspection, and reduced revetment durability. Only revetment durability was addressed in this study.
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