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dc.contributorUnited States. Army. Corps of Engineers. New Orleans District.-
dc.contributor.authorNickles, Charles R.-
dc.contributor.authorPokrefke, Thomas J.-
dc.descriptionTechnical Report-
dc.descriptionAbstract: This investigation was concerned with the development of plans for a stone control structure in Six Mile Lake to maintain a flow distribution of 70 percent down the Atchafalaya River toward Morgan City, LA, and 30 percent down Six Mile Lake to the Wax Lake Outlet channel for nonflood periods, less than 550,000 cfs Atchafalaya Basin discharge. The study indicated that the desired flow distribution could be obtained with a stone structure in Six Mile Lake connected to the West and South Protection Levees by earthen overflow levees. The stone structure began at the right bank end of the earthen levee, sta 17+00, extended for 332.5 ft to sta 20+32.5 at el 11.3 with a 30-ft crown, sloping down at 1V on 10H to el 7.5 at sta 20+70.5, continuing at el 7.5 with a 30-ft crown for 1,100 ft to sta 31+70.5, sloping down to el -2.0 at sta 32+00.5, continuing for 1,100 ft at el -2.0 with a 10-ft crown to sta 43+00.5, sloping up to el 11.3 at sta 43+45.5, continuing at el 11.3 with a 30-ft crown for 354.5 ft to tie in to the earthen Cypress Island cutoff levee at sta 47+00. The stone structure had side slopes of 1V on 3H on the upstream face and 1V on 4H on the downstream face. Stability berms that extended 181.5 ft upstream and 200 ft downstream of the axis of the structure were placed at el -5.0 from sta 17+38 to 46+62. The earthen levee on the right bank was constructed at el 11.3 and the levee on Cypress Island was constructed at el 10.8. This structure produced flow distributions ranging from 27 percent at the lower flows to about 35 percent for flows near 550,000 cfs. Velocities ranged from about 12 fps in the notch to 9 fps 1,000 ft below the axis of the structure. This was the nearest to the desired 70-30 percent distribution with the lowest velocities of all plans tested.-
dc.publisherHydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical report (U.S. Army Engineer Waterways Experiment Station) ; HL-88-29.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectDiversion structures-
dc.subjectHydraulic structures-
dc.subjectAtchafalaya River-
dc.subjectWax Lake Outlet Control Structure-
dc.subjectHydraulic models-
dc.titleWax Lake Outlet control structure, Atchafalaya River : hydraulic model investigation-
Appears in Collections:Technical Report

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