Accession Number:

ADA000338

Title:

Outlet Works and Stilling Basin, Ririe Dam and Reservoir, Willow Creek, Idaho; Hydraulic Model Investigation.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER DIV NORTH PACIFIC BONNEVILLE OREG DIV OF HYDRAULIC LAB

Personal Author(s):

Report Date:

1972-01-01

Pagination or Media Count:

66.0

Abstract:

Ririe Dam is a 251-ft-high rockfill embankment on Willow Creek near Idaho Falla, Idaho. Flow regulation is provided by an outlet works consisting of an intake tower, two 3.75-ft by 7.0-ft slide valves, an 8.0-ft-wide by 11.25-ft-high conduit, a 20.0-ft-wide by 74.66-ft-long stilling basin, and a riprapped exit channel with bottom as wide as the stilling basin. A portion of the forebay, the hydraulic structures, and 300 ft of exit channel were reproduced in a 125-scale model. The model conduit was sloped to produce the computed specific energy gradient for the design discharge of 1900 cfs.

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE