Vermeyen, Tracy. 1991. "Hydraulic Model Study of Ritschard Dam Spillways - October 1991". Bureau of Reclamation, Report Number R-91-08.
Abstract: The Bureau of Reclamation conducted a physical model investigation to help design the hydraulic
structures associated with Ritschard Dam. Ritschard Dam will have a labyrinth weir emergency
spillway ancl an uncontrolled ogee crest service spillway, both of which are expected to convey
flows beyond the limits of contemporary design criteria. Preliminary flume studies were conducted
on sections of the labyrinth and ogee crests to determine discharge coefficients and surface
pressure distributions (ogee only). The Ritschard Dam model was used to determine if the ogee
and labyrinth spillways could, in combination, convey the probable maximum flood peak outflow.
In addition, the model was used to determine the most efficient energy dissipation structure for the
service spillway and flow conditions in Muddy Creek.
Web Link:
http://www.usbr.gov/pmts/hydraulics_lab/pubs/R/R-91-08.pdf
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