Outlet Works for Branched Oak and Cottonwood Springs Dams, Oak Creek, Nebraska, and Cottonwood Springs Creek, South Dakota. Hydraulic Model Investigation.
Abstract
Model investigations of the outlet works for Branched Oak and Cottonwood Springs Dams were primarily concerned with hydraulic operating characteristics over a wide range of heads. Although the structures were similar in design and purpose, geometric differences required the use of separate model studies, which were conducted with 1:10-scale models that reproduced portions of the approach area, the intake structure, and the outlet conduit. The Branched Oak model also reproduced an SAF impact-type stilling basin and downstream exit channel. Both models indicated undesirable flow characteristics such as nappe flutter, sloshing, and gulping which tended to vibrate the structures. A riprap plan of protection was developed for the recommended exit channel configuration. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- AD0736855
Entities
People
- John L. Grace Jr.