This investigation was concerned with the development of plans for the Smithland Locks and Dam located on the Ohio River at mile 918.5. The study indicated that satisfactory navigati on conditions could be developed with a 17-gate or 11-gate spillway and with a 600- and a 1,200- ft lock or with two adjacent 1,200-ft locks. With two 1,200-ft locks, a new concept in the arrangement of the lock auxiliary walls was developed that would improve navigation conditions, particularly for downbound tows. Ports will be required in the upper guard walls to reduce the tendency for crosscurrents near the ends of the walls. Shoaling in the lower lock approach will be a maintenance problem but could be minimized with the use of wing dikes along the lower end of the lower guard wall. Developments in the lower reach are affected by divided flow and intermittent flow from the Cumberland River. Dike structures will be required along the right bank downstream of the locks to prevent the channel from meandering and migrating toward the right bank. There will be a tendency for some shoaling in the channel between Cumberland and Towhead Islands approaching the mouth of the Cumberland River, particularly when there is flow to the left of Towhead Island, and reduction in flow in the channel to the left of Cumberland Island. There will tend to be a greater concentration of flow toward the gate bays near the fixed weir, particularly with the 11-gate spillway, causing a deep scour hole downstream of the gates and shoaling to the left downstream of the fixed weir. Flow through the gates near the fixed weir can be improved by moving the fixed weir about 160 ft upstream of the axis of the dam and tying into the left spillway abutment pier in a curve forming a guide wall. Scouring will occur near the upper corner and riverside face of the gated spillway cofferdam, but the scouring can be moved away from the cofferdam with a deflector developed during the study. Results also indicated conditions that will exist during various phases of construction._x000D_ _x000D_ NOTE: This file is large. Allow your browser several minutes to download the file.


    Access

    Download


    Export, share and cite



    Title :

    Smithland Locks and Dam, Ohio River: Hydraulic Model Investigation



    Published in:

    Publication date :

    1983


    Size :

    18724706


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :




    Navigation Conditions at Cannelton Locks and Dam, Ohio River: Hydraulic Model Investigation

    Franco, John J. / McKellar, Cody D. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1975

    Free access


    Navigation Conditions at Uniontown Locks and Dam, Ohio River: Hydraulic Model Investigation

    Shows, Louis J. / Franco, John J. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1975

    Free access