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Flood volumes in the upper Mississippi River basin, April 1 through September 30, 1993

Circular 1120-H

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Abstract

Previous maximum flows on many streams and rivers were exceeded during the flood of 1993 in the upper Mississippi River Basin. Not only were peak discharges exceeded at many streamflow-gaging stations, but flood volumes were significantly higher than previous maximums. Rainfall amounts that were greater than 50 inches were recorded in parts of Kansas, Missouri, and Iowa from April 1 through September 30, 1993 . As a result of the excess rainfall, 53 of the 60 stations discussed in this report had flow volumes that were greater than twice the mean flow volume for April through September. The Mississippi River at St. Louis, Missouri, remained above flood stage for 144 days from April 1 to September 30, 1993, compared with 81 days during the 1973 flood. Of the 60 stations, 24 recorded new maximum 3-day flood volumes, and 47 recorded new maximum 120- day flood volumes. This indicates that the flooding of 1993 is significant with respect to its long duration and magnitude of flow . The same aspect is indicated in the frequency analysis of the 1993 flood. During the 1993 flood, the 100- year 3-day flows were exceeded at 22 stations, and the 120-day flows were exceeded at 43 stations. 

Study Area

Table of Contents

  • Foreword
  • Abstract
  • Introduction
  • Precipitation, April 1 through September 30, 1993
  • Flood volumes, April 1 through September 30, 1993
  • Effects of reservoirs on floods
  • Elevation and contents of selected reservoirs
  • Summary
  • Selected references

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Flood volumes in the upper Mississippi River basin, April 1 through September 30, 1993
Series title:
Circular
Series number:
1120
Chapter:
H
Year Published:
1995
Language:
English
Publisher:
U.S. Government Printing Office
Publisher location:
Washington, D.C.
Contributing office(s):
Iowa Water Science Center
Description:
v, 32 p.: ill.; 28 cm.
Country:
United States
Other Geospatial:
Upper Mississippi River basin
Online Only (Y/N):
N
Additional Online Files (Y/N):
N