Dokumen (Determining The Coefficient of Tr, Α and River Length (L) of Flood Runoff Model Using Synthetic Unit Hydrograph Nakayasu (Case Study Bedadung Watershed Jember))

Salim, Noor (2014) Dokumen (Determining The Coefficient of Tr, Α and River Length (L) of Flood Runoff Model Using Synthetic Unit Hydrograph Nakayasu (Case Study Bedadung Watershed Jember)). IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE).

Text 2. Determining The Coefficient of TR.pdf Download (3MB)

Abstract

Usage of synthetic unit hydrograph Nakayasu for calculating of flood discharge, often result in
different values with a significant deviation of a field recording flood discharge. This will affect the design of
water building, river cross-sectional studies and other hydraulics study purposes. Significant deviation values
due to the characteristics of each watershed are not the same, especially land use in most of the watershed is
currently changing dramatically, thus greatly affect the runoff coefficient. The results of modeling runoff
patterns using synthetic unit hydrograph Nakayasu in the watershed Bedadung district of Jember in this study
were obtained value of Tr = 0.3 and α = 0.651 gives the reliability of 71%. By obtaining value of Tr and α more
detail, and utilizing the distribution of land use or runoff factors, then investigated coefficient of river length (L).
As a result the value of the coefficient L is 0.052 which have a level of reliability model of 87.44%.

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Item Type:	Article
Keywords/Kata Kunci:	Nakayasu, river, flood, plan
Subjects:	600 Technology and Applied Science 600 Technology and Applied Science > 620 Engineering > 624 Civil Engineering
Divisions:	Faculty of Engineering > Department of Civil Engineering (S1)
Depositing User:	Noor Salim | salimkzt@gmail.com
Date Deposited:	26 Nov 2019 01:24
Last Modified:	26 Nov 2019 01:24
URI:	http://repository.unmuhjember.ac.id/id/eprint/2893

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