Model Study of Prado Spillway, California: Hydraulic Model Investigation
Abstract
A 1:50-scale hydraulic model was used to evaluate hydraulic performance of proposed modifications to the Prado Dam Spillway. Prado Dam is located about 40 miles southeast of Los Angeles, CA, on the Santa Ana River and was completed in 1941. Urbanization in the dam's watershed and an increase in the Probable Maximum Flood design rainfall resulted in a significant increase in design discharges for the flood control project, making it necessary to increase both the dam's storage capacity and the spillway discharge capacity. Spillway rating curves were determined for labyrinth and ogee-crested weirs. Several abutment and approach channel designs were considered. Velocities were measured in the spillway approach channel and in the downstream exit channel. The model was used to determine water-surface elevations in the spillway channel and chute, velocities and surges against the downstream dam embankment, scour potential against the downstream spillway training wall and cutoff wall, and to design toe protection for these downstream features.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2000
- Accession Number
- ADA382559
Entities
Organizations
- Engineer Research and Development Center