Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Corte Madera Creek Flood Control Project, Marin County, Statement of Findings
Author: Corte Madera Creek Flood Control Project, Marin County
Author: Corte Madera Creek Flood Control Project, Unit 4, Town of Ross, Marin County, California
Author: Final Environmental Impact Statement
Author: United States. Army. Corps of EngineersPublisher:
ISBN:
Category : Corte Madera Creek (Calif.)
Languages : en
Pages : 228
Book Description
Corte Madera Creek
Author: Publisher:
ISBN:
Category : Environmental impact statements
Languages : en
Pages : 176
Book Description
Interim Operation and Maintenance Manual
Author: Publisher:
ISBN:
Category : Corte Madera Creek (Marin County, Calif.)
Languages : en
Pages : 26
Book Description
Corte Madera Creek, Marin County, California, Modified Unit 4 Sedimentation Study
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Sediment deposition occurs in the lower reaches of the concrete-lined Corte Madera Creek flood control channel because the elevation of the channel bottom is below sea level. These sediment deposits, combined with the presence of tube worms and barnacles on the channel walls, reduce the flood-carrying capacity of the channel. The upstream portion of the original flood control project was not completed and flood flows above 3,000 cfs are not contained in the natural channel upstream. Thus, there is reduced flow competency to carry the coarse sediment load delivered by flood flows. With annual maintenance and upstream containment of breakout flows, most of the sediment deposited in the concrete channel from seasonal antecedent flow can be washed out by the time the flood peak occurs. An HEC-6 numerical sedimentation model study was conducted to evaluate several alternative plans to provide flood containment and sediment storage while also maintaining the natural characteristics of the upstream channel.
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