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|Title:||Entrance to upstream approach canal, Gainesville Lock, Tombigbee River, Mississippi and Alabama : hydraulic model investigation|
|Authors:||United States. Army. Corps of Engineers. South Atlantic Division.|
Shows, Louis J.
Franco, John J.
|Keywords:||Gainesville Lock and Dam|
|Publisher:||Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; H-76-19.|
Abstract: As part of the program for the development of navigation on the Tennessee-Tombigbee Waterway, the Gainesville Lock and Dam will be the first navigation structure proposed for the development of the waterway. The lock will be in a bypass canal about 266 miles above the mouth of the Mobile River, which is at the foot of Government Street in Mobile, Alabama, or approximately 49 miles above the confluence of the Tombigbee and Warrior Rivers and 53 miles above Demopolis Lock and Dam. The structure is designed to maintain during low flows a minimum upper pool extending upstream to the proposed Aliceville Lock and Dam at mile 332.6. The project will include one lock with clear chamber dimensions of 110 by 600 ft located in a bypass canal on the left overbank and a dam consisting of a gated spillway and fixed overflow section. A fixed-bed model reproduced about 2.6 miles of the Tombigbee River channel, about 3000 ft of the upstream end of the navigation canal, and the adjacent overbank areas to an undistorted scale of 1:100. The model investigation was concerned with the development of good navigation conditions at the entrance to the approach canal and in the two bends just upstream of the entrance to the canal, and in the distribution of flow through the gated spillway. Results of the investigation revealed the following : (a) Satisfactory navigation could be developed at the entrance to the lock approach canal by modification of the excavation along the left bank and in the bend adjacent to the canal. (b) Satisfactory navigation conditions for two-way traffic through the reach could be provided under most conditions by the excavation mentioned in (a) above, by increasing channel width, and by improving the curvature of the second bend upstream of the canal. (c) Improving the distribution of flow through the gated spillway with a training wall would have little effect on water-surface elevations upstream.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|
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