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ANALISIS ALIRAN PERMUKAAN SUNGAI TERHADAP ZONASI KERENTANAN BANJIR PADA SUB DAS BATANG MERANGIN TEMBESI, JAMBI

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Watersheds are areas where rainfall falls and is collected by mountain ridges before flowing through smaller rivers and into the main river. Rainfall that falls directly on the ground separates into flow water, evaporation water, and infiltration water that eventually enters the river as stream discharge. Surface runoff can occur from excessive rainwater falling to the ground. Runoff can occur when soil that has reached infiltration capacity is unable to absorb excess rainwater. Insufficient rainwater storage can lead to river overflow and flooding. By using the rational method to calculate the peak discharge value and surface runoff coefficient, it is possible to identify flood-prone areas based on surface runoff. Cook's method is used to determine the value of surface runoff coefficient based on four factors: slope, soil infiltration, land cover, and surface water storage. In this study, the runoff coefficient was 0.77. In addition, rainfall also affects the peak discharge value. Rainfall data was obtained using SiBias and examined over a period of 5 and 10 years. Using the rainfall data and the runoff coefficient value, the rational method generates the estimated peak discharge. Using Hec-Ras application simulation, the surface runoff area was ascertained. Surface runoff areas are near residential areas at low elevations.

Availability
Inventory Code Barcode Call Number Location Status
2407003307T145100T1451002024Central Library (Reference)Available but not for loan - Not for Loan
Detail Information
Series Title
-
Call Number
T1451002024
Publisher
Indralaya : Prodi Teknik Geologi, Fakultas Teknik Universitas Sriwijaya.,
Collation
xvii, 94 hlm.; ilus.; 29 cm
Language
Indonesia
ISBN/ISSN
-
Classification
551.480 7
Content Type
Text
Media Type
unmediated
Carrier Type
-
Edition
-
Subject(s)
Curah hujan
Prodi Teknik Geologi
Specific Detail Info
-
Statement of Responsibility
Other version/related
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