LOCAL DESIGN STORM: VOLUME I. EXECUTIVE SUMMARY

Recently developed improved methods for highway storm water drainage require information on the temporal distribution of rainfall (i.e., hyetograph) in addition to the average rain intensity. The triangular design hyetograph method is developed as a practical method to provide the local storm hyetograph for design of highway storm drainage facilities. The method is based on the methods of moments, using and preserving the statistical mean of the first time moment of rainstorms. The method is proposed as a trade-off between theoretical sophistication and practical simplicity. A total of 293,946 rainstorms from the hourly precipitation data of 222 National Weather Service stations and 5 to 60 minute data of 13 raingage stations of USDA Agricultural Research service were analyzed to provide the statistical values of the hyetograph parameters for the United States. Volume I is the executive summary of the project report. It briefly describes the background and objectives of the research project, the methodology and procedure of the first-moment triangular design hyetograph method, and results of statistical analysis of the rainfall data. (FHWA)

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/41862
• Supplemental Notes:
  • The other three volumes of this report set are: Vol. II Methodology and Analysis (FHWA/RD-82/064), Vol. III User's Manual (FHWA/RD-82/065), Vol. IV Tabulation of Sample Detail Results of Statistical Analysis (FHWA/RD-82/066).
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Civil and Environmental Engineering
  205 North Mathews Avenue
  Urbana, IL  United States  61801-2352

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Yen, B C
  • Chow, V T
• Publication Date: 1983-5

Media Info

• Media Type: Digital/other
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Data analysis; Design methods; Design storm; Drainage; Graphs; Hydrology; Mathematical analysis; Rainfall; Statistical analysis; Surface drainage
• Uncontrolled Terms: Hyetographs
• Old TRIS Terms: Highway drainage
• Subject Areas: Data and Information Technology; Design; Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00381771
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-82-063 Final Rpt., FCP 35H2-082
• Contract Numbers: DOT-FH-11-9666
• Files: NTL, TRIS, USDOT
• Created Date: Mar 30 1984 12:00AM