Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/13294
Full metadata record
DC FieldValueLanguage
dc.contributorUnited States. Army. Corps of Engineers. New Orleans District-
dc.contributor.authorDonnell, Barbara P.-
dc.contributor.authorLetter, Joseph V.-
dc.date.accessioned2016-07-18T15:22:36Z-
dc.date.available2016-07-18T15:22:36Z-
dc.date.issued1992-01-
dc.identifier.urihttp://hdl.handle.net/11681/13294-
dc.descriptionTechnical Report-
dc.descriptionAbstract: The Wax Lake Outlet and Atchafalaya River deltas in Louisiana have grown dramatically, and concern over the impact of this growth has led the US Army Corps of Engineers to conduct an investigation to predict how the deltas will evolve over the next 50 years. An additional task was to determine the impacts of that growth on navigation, flood control, salinity, and sedimentation in the bay area. The technical approach for this investigation builds upon the TABS-2 finite element numerical modeling system and is fully described in Report 11 of this series. Comparisons of the existing condition results with various alternatives are presented. In summary, the extension of the Avoca Island Levee to Beer Island (Reach 2) resulted in an approximate 8 percent increase in the predicted size of the 50-year delta evolution regardless of other constraints tested. For all alternatives tested, the size of the 50-year subaerial delta fell within the bounds of 56 to 144 square miles. The most extreme delta evolution simulation tested was the condition without the Wax Lake Outlet flow control project, no navigation channel dredging, and no levee extension. For all delta evolution simulations tested, the water surface elevations within areas east of the levee increased from 3.4 to 6.0 ft by year 2030. In each case tested, the Avoca Island Levee Extension to Reach 2 decreased the backwater effect of the 50-year delta by approximately 2 ft.-
dc.publisherHydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1003474-
dc.relation.ispartofseriesTechnical report (U.S. Army Engineer Waterways Experiment Station) ; HL-82-15 rept. 12.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectAtchafalaya River-
dc.subjectAtchafalaya River Delta-
dc.subjectAtchafalaya Basin-
dc.subjectLouisiana-
dc.subjectTerrebonne Marshes-
dc.subjectHydrodynamics-
dc.subjectWax Lake Outlet-
dc.subjectDelta evolution-
dc.subjectDelta growth-
dc.subjectTABS-2-
dc.subjectComputer program-
dc.subjectNumerical model-
dc.subjectMathematical model-
dc.subjectSediment transport-
dc.subjectSedimentation-
dc.subjectDeposition-
dc.subjectSalinity-
dc.subjectSaltwater encroachment-
dc.subjectGeomorphology-
dc.subjectVerification-
dc.subjectSubsidence-
dc.titleThe Atchafalaya River Delta. Report 12, Two-dimensional modeling of alternative plans and impacts on the Atchafalaya Bay and Terrebonne Marshes-
dc.typeReporten_US
Appears in Collections:Technical Report

Files in This Item:
File Description SizeFormat 
101.pdf5.47 MBAdobe PDFThumbnail
View/Open