Analysis of Flood Discharge due to Land Used Changes in Keramasan Watershed Palembang, Indonesia

Yosi Marizan, Achmad Syarifudin


Changes in land use in the catchment area have a significant impact on flood discharge. This phenomenon also occurs in the Keramasan watershed. This study aims to determine the impact of land use changes on flood discharge. To calculate the flood discharge used the rational method. The data used in this study include rainfall data, land use data and topographic data. Rainfall data used is daily rainfall data recorded at BMKG Kenten Palembang. Daily rainfall is transformed into hourly rainfall intensity using the Mononobe method.The results of this study indicate that the increase in flood discharge due to changes in land use is approximated by the linear trend equation Y = a + b*X1 + c*X2 + d*X3. Variable Y is flood discharge. The variables X1, X2, and X3 are the area of rice fields, the area of agricultural land, and the area of housing. The combination correlation coefficient is 0.96. Variables a, b, c, and d are –350.60, 33.63, -75.00, and 1.006. The partial correlation coefficient, RYX1 is 0.57, RYX2 = 0.57, and RYX3 = 0.57.


land uses changes, flood discharge, multi regression

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