00713553

Component

http://onlinepubs.trb.org...trr/1995/1483/1483-001.pdf

https://scholar.google.co...Eash&publication_year=1995

The magnitude and frequency of the 1993 peak discharges in the upper Mississippi River Basin are characterized by applying Bulletin 17B and L-moment methods to annual peak discharges at 115 unregulated watersheds in the basin. The analysis indicated that the 1993 flood was primarily a 50-year or less event on unregulated watersheds less than about 50,000 sq km (20,000 sq mi). Of the 115 stations analyzed, the Bulletin 17B and L-moment methods were used to identify 89 and 84 stations, respectively, having recurrence intervals of 50 years or less, and 31 and 26 stations, respectively, having recurrence intervals greater than 50 years for the 1993 peak discharges. The 1993 flood in the upper Mississippi River Basin was significant in terms of (a) peak discharges with recurrence intervals greater than 50 years at approximately 25% of the stations analyzed, (b) peak discharges of record at 33 of the 115 stations analyzed, (c) extreme magnitude, duration, and areal extent of precipitation, (d) flood volumes with recurrence intervals greater than 100 years at many stations, and (e) extreme flood damage and loss of lives. Furthermore, peak discharges on several larger, regulated watersheds also exceeded the 100-year recurrence interval. However, for about 75% of the 115 unregulated stations in the analysis, the frequency of the 1993 peak discharges was less than a 50-year event.

This paper appears in Transportation Research Record No. 1483, 1993 Midwest Floods and Water Quality Best Management Practices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01399791

English

p. 1-10

1995

Transportation Research Record

Figures (4) ; References (10) ; Tables (4)

Fatalities; Flood damage; Floods; Magnitude; Peak discharge; Watersheds

Mississippi River Basin flood, 1993

Flood frequency

Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

TRIS, TRB

Nov 16 1995 12:00AM

• CORRELATIONS BETWEEN HEAVY METALS AND SUSPENDED SOLIDS IN HIGHWAY RUNOFF: IMPLICATIONS FOR CONTROL STRATEGIES
• CURRENT WATER QUALITY BEST MANAGEMENT PRACTICES DESIGN GUIDANCE
• EFFECTS OF FEDERAL LEVEES AND RESERVOIRS ON 1993 FLOOD STAGES IN ST. LOUIS
• EFFECTS OF STORM WATER REGULATIONS ON COLORADO DEPARTMENT OF TRANSPORTATION
• ENHANCING CONTAMINANT REMOVAL IN STORMWATER DETENTION BASINS BY COAGULATION
• HYDRAULICS OF FLARED END SECTIONS FOR PIPE CULVERTS
• IMPACTS OF 1993 UPPER MISSISSIPPI RIVER BASIN FLOODS ON HIGHWAY SYSTEMS
• JULY 1993 FLOOD DAMAGE TO US-71 BRIDGE OVER BRUSHY CREEK, CARROLL COUNTY, IOWA: CASE STUDY
• MAGNITUDE AND FREQUENCY OF 1993 FLOOD VOLUMES IN UPPER MISSISSIPPI RIVER BASIN
• MOBILIZATION OF MAJOR AND TRACE CONSTITUENTS OF HIGHWAY RUNOFF IN GROUNDWATER POTENTIALLY CAUSED BY DEICING CHEMICAL MIGRATION
• NATIONAL EVALUATION OF WATER QUALITY ISSUES FOR HIGHWAY PLANNING
• SCOUR MEASUREMENTS AT BRIDGE SITES DURING 1993 UPPER MISSISSIPPI RIVER BASIN FLOOD
• SELECTION OF FLOOD FREQUENCY ANALYSIS PROCEDURE FOR EVALUATING FLOOD-ESTIMATION MODELS
• WATER LEVEL STATISTICS FOR DESIGN OF TRANSPORTATION FACILITIES IN COASTAL LOUISIANA