00677738

Component

http://onlinepubs.trb.org...trr/1994/1471/1471-007.pdf

https://scholar.google.co...ranz&publication_year=1994

Most counties across the United States use design storm approaches with single-event rainfall-runoff models and steady-state hydraulic models for flood analysis and design. DuPage County, Illinois, has recently adopted a different approach. A continuous simulation model, the Hydrological Simulation Program--FORTRAN model, has been used to simulate 40 years of runoff for 35 land segments that represent the variations in land cover conditions and historical precipitation across the county. Engineers use the runoff as input to the full equations model, an unsteady flow model, to simulate county streams. Results from these simulations are used to estimate flood probabilities by a new statistical technique. DuPage County has taken this new approach to deal with the complicated flood design and analysis problems that exist in its large and urbanizing watersheds.

This paper appears in Transportation Research Record No. 1471, Recent Research on Hydraulics and Hydrology. 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

01396802

English

p. 41-46

1994

Transportation Research Record

0309061040

Figures (9) ; References (15) ; Tables (1)

Floods; Hydrology; Innovation; Runoff; Simulation; Statistical analysis; Urbanization; Watersheds; Weather forecasting

Flood frequency

DuPage County (Illinois)

DuPage County (Illinois)

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

TRIS, TRB

May 23 1995 12:00AM

• CORRELATION OF PAVEMENT SURFACE TEXTURE TO HYDRAULIC ROUGHNESS
• DEVELOPING EROSION CONTROL PLANS FOR HIGHWAY CONSTRUCTION
• DEVELOPMENT OF REGIONALIZED CURVES FOR DRAINAGE AREA VERSUS SEDIMENT BASIN SIZE
• HYDRAULICS OF SAFETY END SECTIONS FOR HIGHWAY CULVERTS
• HYDROLOGIC ENGINEERING CENTER MODELS FOR URBAN HYDROLOGIC ANALYSIS
• IMPROVEMENTS IN CURB-OPENING AND GRATE INLET EFFICIENCY
• MULTILANE HIGHWAY DESIGN CROSSFALL AND DRAINAGE ISSUES
• SCOUR AROUND WIDE PIERS IN SHALLOW WATER
• SMALL URBAN WATERSHED USE OF HYDROLOGIC PROCEDURES
• URBAN HYDROLOGY DESIGN USING SOIL CONSERVATION SERVICE TR-55 AND TR-20 MODELS