FLOOD-CONTROL FACILITIES FOR UNIQUE FLOOD PROBLEMS

THE UNUSUAL CLIMATIC, HYDROLOGIC, TOPOGRAPHIC AND PHYSIOGRAPHIC CONDITIONS IN SOUTHERN CALIFORNIA PRESENT AND CREATE MANY UNIQUE PROBLEMS IN CONNECTION WITH THE DESIGN OF FACILITIES FOR FLOOD-CONTROL. THE UNUSUAL CONDITIONS INCLUDE EXTREME CONCENTRATION OF SEASONAL RAINFALL AND RUNOFF, SHORT-DURATION AND HIGH-PEAK STORMS, STEEP TOPOGRAPHIC GRADIENTS AND UNIQUE COMBINATION OF PHYSIOGRAPHIC AND CULTURAL CHARACTERISTICS. FACILITIES INCLUDE DEBRIS BASINS, CONCRETE PAVED CHANNELS, LEVEED EARTH CHANNELS WITH AND WITHOUT GRADE-CONTROL STRUCTURES, AND CONTINUOUS SINGLE LEVEES. INITIALLY, CONCEPTS OF DESIGN HAVE BEEN BASED ON JUDGEMENT AND THEORETICAL CONSIDERATIONS WITH LIMITED OR NO ACTUAL KNOWLEDGE OR EXPERIENCE ON SUCH PROBLEMS. SOME FACILITIES HAVE BEEN DESIGNED WITH THE AID OF SCALED MODEL STUDIES, BUT FOR THE MOST PART, PROTOTYPE VERIFICATION OF SIMULATED CONDITIONS FOR FLOOD OF DESIGN MAGNITUDE IS AWAITED. HOWEVER, BEHAVIOR OF STRUCTURES WITH SMALL FLOWS, RANGING FROM ABOUT ONE-THIRD TO ONE-HALF OF DESIGN VALUE, AS WELL AS INDICATED NECESSITY FOR REMEDIAL MEASURES, ARE PRESENTED. /ASCE/

• Supplemental Notes:
  • Vol 97, No WW1, PROCEEDING PAPER NO 7894, PP 185-203,
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Wong, R F
  • Robles, A
• Publication Date: 1971-2

Media Info

• Serial:
  • Journal of Waterways and Harbors Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Climate; Concrete; Design; Ditches; Flood protection; Geography; Hydrology; Rainfall; Runoff; Seasons; Storms; Topography
• Uncontrolled Terms: Seasonal variations
• Old TRIS Terms: Debris barriers
• Subject Areas: Design; Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204334
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 25 1971 12:00AM