Model Studies of the Portugues and Bucana Rivers Channelization, Puerto Rico. Hydraulic Model Investigation.
Final rept. Mar-Nov 75,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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Two 130-scale physical hydraulic models of the Portugues and Bucana Rivers were used to determine the adequacy of the original designs for the flood control channelization project through the city of Ponce, Puerto Rico. The proposed channelization included trapezoidal to rectangular channel transitions, stilling basins, and drop structures in the high-velocity channels. A 3300-ft prototype channel length was used to study the transitions and stilling basins including riprap stability downstream from the stilling basins. A 1200-ft prototype channel length was used to study the drop structures and the adjacent riprap protection requirements. Test results indicated that the original design with certain modifications would effectively transmit all expected flood releases from the proposed Portugues and Cerrillos Dams. Modifications to transitions at entrances to the high-velocity channel reaches were streamlined within the original right-of-way to reduce surface turbulence and standing waves. Geometry of the original stilling basins was altered to prevent the oblique hydraulic jumps and the end-sill heights were lowered to reduce the water-surface drawdown, surface roller waves, and high bottom velocities downstream of each basin.
- Hydrology, Limnology and Potamology
- Civil Engineering
- Test Facilities, Equipment and Methods