FLOOD RECORD COMPILATION AND FREQUENCY PLOT-HY-5

A METHOD IS DESCRIBED WHEREBY ANNUAL MAXIMUM FLOOD RECORDS CAN BE STORED, RETRIEVED AND DISPLAYED FOR USE BY ENGINEERS INVOLVED IN THE DESIGN OF A STREAM CROSSING. THE DATA IS THE ANNUAL FLOOD DATA PUBLISHED BY THE U. S. GEOLOGICAL SURVEY IN THEIR WATER SUPPLY PAPERS. THE GRAPHICAL DISPLAY OF THE DATA IS BASED ON A GUMBEL RECURRENCE INTERVAL. THE COMPUTER SYSTEM WAS DEVELOPED IN ORDER TO ALLOW FOR AS FREQUENT AS REQUIRED UPDATING OF THE FREQUENCY PLOTS. THE MANUAL UPDATING OF THE PLOT IS TIME-CONSUMING DUE TO THE NEED FOR RECALCULATING THE RETURN PERIOD EACH TIME A NEW FLOOD RECORD IS ADDED. HOWEVER, THROUGH THE USE OF THE COMPUTER, THE FLOOD RECORD CAN BE UPDATED AND THE FREQUENCY PLOT GENERATED AUTOMATICALLY. THIS REVISED EDITION IS PUBLISHED IN ORDER TO CLEAR UP SOME INCONSISTENCIES ENCOUNTERED IN THE FREQUENCY PLOT AND GAGING STATION INDEX. THE FREQUENCY PLOT HAS BEEN REVISED TO CHANGE THE METHOD OF PRINTING THE VERTICAL SCALE. THE INDEX HAS NECESSITATED AN INCREASE IN THE SIZE OF TABLES USED FOR CREATING THE GAGING STATION INDEX. THESE CHANGES ARE IN THE COMPUTER PROGRAM ENTITLED, FLOOD RECORD REPORTS. /BPR/

  • Corporate Authors:

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Tennent, R C
    • Harrison, L J
  • Publication Date: 1967-5

Subject/Index Terms

Filing Info

  • Accession Number: 00203973
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Jan 16 1994 12:00AM