Journal
JOURNAL OF HYDROLOGIC ENGINEERING
Volume 15, Issue 12, Pages 1059-1069Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)HE.1943-5584.0000275
Keywords
Runoff contribution; Flood routing; Hydrograph; Runoff; Watershed management
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Understanding watershed systems is a necessary prerequisite for comprehensive management of the overall basin. Applying simple hydrologic techniques, for which fundamental information is available, is a feasible solution for determination of subwatershed contributions to the generation of total runoff. In this study, an attempt was made to develop an analytical procedure through which the outflow hydrographs could be determined for each subwatershed/area. The technique was based on reverse application of the Muskingum hydrologic routing model and the Area-CN role factor. The technique introduced was then tested to determine if it could solve flood routing problems associated with data for which the input hydrographs were known. A high degree of affinity (i.e., relative error below 32%) was observed between the estimated hydrographs and the recorded data, which verified the satisfactory applicability of the developed approach for estimation of the runoff generated by each subwatershed/area.
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