Red River Waterway John H. Overton Lock and Dam. Report 4. Stilling Basin, Riprap, and Hydropower Requirements, Spillway and Hydropower Model Investigation
Abstract
Tests were conducted on a 1:50-scale model of John H. Overton and Dam, Alexandria, LA, to develop a satisfactory spillway, stilling basin, and riprap plan for the proposed project. Tests were conducted with and without a proposed hydropower plan. The recommended stilling basin and riprap designs provided a stable conditions for single gate operation with normal upper pool and minimum tailwater. Tests were conducted with four- and three-unit powerhouse having various approach and exit configurations. During construction of John H. Overton Lock and Dam, sediment deposition problems occurred in the lower lock approach of Red River Lock and Dam No. 1. Additional sedimentation studies were conducted to ensure that these problems would not occur at John H. Overton. Dikes placed in the downstream channel were proposed as a solution to the sedimentation problem. The stability of the riprap forming these dikes and the impact of the dikes on the water-surface profiles were also studied in this investigation. (jhd)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1990
- Accession Number
- ADA227172
Entities
People
- Jerry V. Markussen
- Stephen T. Maynord