NDLI: Estimation of Design Flood Hydrograph for an Ungauged Watershed

Content Provider	Springer Nature Link
Author	Sui, Jueyi
Copyright Year	2005
Abstract	Based on the physiographical features of the studied watershed of 102.5 km$^{2}$ in northern Ontario and the meteorological data of one nearby climatic station, through the combination of the regionalization of flood and the HEC-1 modeling, this article presents an approach that may be used to determine the desired peak flows for the ungauged watershed. The empirical equations used to determine the desired peak flows were developed by the Cumming Cockburn Ltd. (CCL) who has carried out the studies on flood regionalization by using flow data at 380 gauging stations in Ontario. CCL has proposed four methods to estimate peak flows, namely 1) regression method describing multiple linear relationships between flood flow and related parameters; 2) index flood frequency curve; 3) regional flood frequency curve and 4) isoline map for unit peak flow. The desired peak flows for studied watershed determined by CCL methods were used to calibrate the HEC-1 model for the rainfall-runoff simulation for this watershed which consists of 15 subwatersheds. Through slight adjustment in the CN number used in the HEC-1 model, the calibrated HEC-1 model could be used for rainfall-runoff simulation for this ungauged watershed. This approach could be recommended for hydrological design and watershed management for ungauged watersheds provided the analyses of flood regionalization could be conducted. In addition, comparing to the Bavaria forest region, Germany, some questions have been discussed in this article.
Starting Page	813
Ending Page	830
Page Count	18
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	19
Issue Number	6
e-ISSN	15731650
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CN values HEC-1 Model Ontario peak flows regionalization of flood ungauged watershed Hydrogeology Meteorology/Climatology Geotechnical Engineering Civil Engineering Environment
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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