Journal Paper

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Journal: محیط شناسی
Year:1389 | Volume:36 | Issue:55
Start Page:99 | End Page:110

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Title

DETERMINATION OF MAXIMUM FLOOD FLOW BY USE OF SAMPLING (OBSERVE) CREAGER AND SCS METHOD (CASE STUDY: GHARASOO RIVER, KERMANSHAH, IRAN)

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 Start Page 99 | End Page 110

Abstract

 Estimation of design FLOODs in ungauged catchments is frequently required in hydrological practice and is of great economic significance Hydrologists consider artificial unit hydro graph as one of applicable methods to estimate peak discharge for water sheds for which hydro climatology data is not available.In general, there are three methods for estimating pea' k discharges, including; Schneider, the Soil Conservation Service (SCS) and triangular methods. All three methods give the same results in regards to the confidence level.However, SCS METHOD estimates FLOOD hydro graphs with less error than other methods.The aim of this research is to suggest the best peak discharge estimation which has the most compatibility with natural hydrographs method. Moreover, natural and artificial methods and unit hydrograph will be compared with. each other. In addition, the best estimation method will be proposed for calculation of coefficients of artificial method. Finally, the FLOOD peak and design FLOOD will be determined.

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