Accession Number:

ADA339432

Title:

Guadalupe River and Bypass Culvert, San Jose, California. Hydraulic Model Investigation.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS COASTAL HYDRAULICS LAB

Personal Author(s):

Report Date:

1998-02-01

Pagination or Media Count:

312.0

Abstract:

Numerous experiments were conducted to evaluate the flow conditions in the Guadalupe River and bypass culverts. The ultimate goal was to develop the desired flow split for the design discharge of 14,600 cfs while maintaining acceptable water surface elevations in the upstream channel. The desired flow distribution was 55 percent of the flow down the bypass culvert with a total inflow of 14,600 cfs. This goal was achieved with many of the designs. Pier extensions on the I-280 piers upstream and downstream from the bypass culvert were effective in reducing localized flow disturbances around the piers and would probably prevent some debris from accumulating on these piers. The pier extensions did not significantly lower the water surface in the upstream or affect the flow distribution between the bypass culvert and the Guadalupe River. Many channel modifications were required due to seismic constraints and aesthetics. The final design will provide acceptable performance as long as the areas exposed to the high velocities are adequately protected.

Subject Categories:

  • Hydrology, Limnology and Potamology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE