PREDICTION OF THE MAGNITUDES AND FREQUENCIES OF FLOODS IN MICHIGAN

ALL KNOWN METHODS OF PREDICTING FLOODS FROM PRECIPITATION WERE INVESTIGATED AND THE INFILTRATION CAPACITY - UNIT HYDROGRAPH PROCEDURE WAS SELECTED FOR THIS STUDY. DATA OF RAINFALL, SNOW MELT, AND FLOOD RUNOFF FROM 58 DRAINAGE BASINS VARYING IN SIZE FROM 0.02 TO 734 SQUARE MILES WERE ANALYZED. THE INFILTRATION VALUES WERE DERIVED FROM 16 DRAINAGE BASINS IN SOUTHEASTERN MICHIGAN. THE SHAPE OF THE UNIT HYDROGRAPH WAS FOUND TO DEPEND ON THE AREA OF THE DRAINAGE BASIN AND THE DEGREE OF URBANIZATION WHICH WAS REPRESENTED BY THE POPULATION DENSITY. A SET OF DESIGN CURVES FOR FLOOD MAGNITUDES WAS DERIVED FOR SOUTHEASTERN MICHIGAN FOR FREQUENCIES OF 10, 20, 30, 50 AND 100 YEARS AND FOR VARIOUS DEGREES OF URBANIZATION - BY POPULATION DENSITIES VARYING FROM 100 TO 10,000 PERSONS PER SQUARE MILE. /FHWA/

• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Civil Engineering
  Ann Arbor, MI  United States  48109

  Michigan Department of State Highways

  State Highways Building, PO Drawer K
  Lansing, MI  United States  48904
• Authors:
  • Brater, E F
  • Sherrill, J D
• Publication Date: 1971-8

Media Info

• Pagination: 52 p.

Subject/Index Terms

• TRT Terms: Drainage basins; Floods; Population; Rainfall; Runoff; Snowmelt; Unit hydrographs; Weather forecasting
• Uncontrolled Terms: Flood frequency
• Subject Areas: Highways; Hydraulics and Hydrology; Society;

Filing Info

• Accession Number: 00204047
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 8 1973 12:00AM