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|Title:||Navigation conditions at Aliceville Lock and Dam, Mississippi and Alabama, Tombigbee River : hydraulic model investigation|
|Authors:||United States. Army. Corps of Engineers. Mobile District.|
Shows, Louis J.
Franco, John J.
|Keywords:||Aliceville 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-78-2.|
Abstract: Aliceville Lock and Dam will be the second navigation structure proposed for the development of navigation on the Tennessee- Tombigbee Waterway. The lock will be along the left bank of the Tombigbee River about 333 miles above the mouth of the Mobile River, which is at the foot of Government Street in Mobile, Alabama, or approximately 67 miles above the proposed Gainesville Lock and Dam. The structures will include one lock with clear chamber dimensions of 110 by 600 ft and a dam consisting of a gated spillway and a fixed-crest overflow weir designed to maintain during low flows a minimum upper pool at el 136.0 extending upstream about 32 miles to the proposed Columbus Lock and Dam. A fixed-bed model reproducing about 2.8 miles of the Tombigbee River channel and adjacent overbank to an undistorted scale of 1:100 was used to determine navigation conditions with the proposed design and to develop such modification as might be required to eliminate conditions that would adversely affect navigation using the lock. The model was also used to determine conditions that might be expected during construction of the lock and darn with the proposed construction plan. Results of the investigation revealed the following: (A.) satisfactory navigation conditions in the upper lock approach could be developed with modification of the excavation along the left bank of the approach channel and excavation of the right bank in the bend near the upper end of the approach channel; (B.) navigation conditions in the lower lock approach could be improved considerably with a dike angled riverward along the right side of the approach channel; (C.) two-way traffic in the second bend upstream of the upper lock approach would be difficult and hazardous during the higher flows; (D.) recommended changes to the original plan would have little effect on water-surface elevations in the reach or on conditions that could be expected during construction of the lock and dam.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|
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