ANALISYS OF RUN OFF COEFISIENT AT METHOD OF CALCULATION CHARGE DIRECT RUN OFF CAUSE BY LAND USED IN UPSTREAM DAS BATANG KURANJI WEST SUMATERA PROVINCE

• Main Author: Aulia (NIM 95004028), Yoshe
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/9684
• Institution: Institut Teknologi Bandung

ABSTRACT: <br /> <br /> <br /> For recent years Land Use in DAS Batang Kuranji has been changing in function for a gradual speed which is from 1995, 1998, and 2001, it has made a significant change in transformation of physical properties such as flow properties run-off coefficient (C) and amount of flow rate which is available or flood flow rate, and this changing has made scientist worried. <br /> <br /> <br /> Transformation value analysis run-off coefficient (C), according land use from 1995, 1998, and 2001, shows that each value in those years are 0.70, 0.71, 0.72 Based on value of C the sensitivity of transformation not significant or not sensitive (1.41% - 1.42%), although those value transformations of C is not sensitive. <br /> <br /> <br /> Return periods of changing in land use which is in a short term (2 - 5 years) has brought a sensitive impact to amount of flow rate whether available flow or flood flow rate.