Text / Upper York Creek Ecosystem Restoration Project; Appendix C: Geotechnical Appendix

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Title: Upper York Creek Ecosystem Restoration Project; Appendix C: Geotechnical Appendix
Creator: U.S. Army Corps of Engineers
Date Created and/or Issued: 2006 August 01
Publication Information: U.S. Army Corps of Engineers, San Francisco District
Contributing Institution: UC Riverside, Library, Water Resources Collections and Archives
Collection: Clearinghouse for Dam Removal Information (CDRI)
Rights Information: Copyrighted
Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user.
Description: Scope/Content: Abstract: This document presents the findings of geotechnical studies on an existing Upper York Creek earthen dam located along York Creek approximately two miles northwest of the City of Saint Helena in Napa County, California. The primary objective of the studies is to evaluate the subsurface conditions of the dam's foundation and the nature of the embankment fill as they relate to the various options for removing the dam and the sediments that accumulated upstream. The dam is considered an impediment to the upstream passage of anadromous fish species, in turn degrading fish spawning and rearing habitat. The California Department of Water Resources (DWR) reported that in the past the dam has experienced overtopping failures releasing silt downstream.
Scope/Content: Height: 50 Length: 140
Scope/Content: Date constructed: 1900.
Type: text
Form/Genre: digital copy
Identifier: ark:/86086/n2cj8cz1
645
Language: English
eng
Subject: Alternative analysis
Sediment and channel dynamics
Dams
Dam retirement
Place: Napa River, CA
York Creek, CA
Upper York Creek Dam
United States

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