Study of hydrological model for water reliability at industrial and residential area in the upper Citarum river basin, Indonesia

This study aimed to model the flow discharge of the upper Citarum River and determine the water reliability based on industrial and residential water demand. The Citarum River discharge generated by modeling using NRECA and HBV model. The data collected for the models consist of hydrology data, land...

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Bibliographic Details
Main Authors: Cahyono, Christian, Juliastuti, Wijayanti, Yureana, Juliani, Any
Format: Conference Proceeding
Language:English
Subjects:
Atmospheric models
Correlation coefficients
Groundwater recharge
Hydrologic models
Hydrology
Land use
Meteorological data
Percolation
Reliability analysis
Residential areas
River basins
Water demand
Water discharge
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Summary:This study aimed to model the flow discharge of the upper Citarum River and determine the water reliability based on industrial and residential water demand. The Citarum River discharge generated by modeling using NRECA and HBV model. The data collected for the models consist of hydrology data, land use and soil characteristics, and meteorological data. Calibration of the model performed using objective functions of correlation coefficient, Nash Sutcliffe and relative volume error value. After that, the population and water demand data incorporated in the water reliability assessment using IWSD value. As a case study, the primary data utilized is from an industrial and residential area of Jatiluhur Regency Industrial Estate, which located about 6 km from Citarum River. The result shows that NRECA model shows better similarity between the simulated and observed river discharge value, compared to HBV model. It may be due to the groundwater storage in the NRECA model that has high influence to the discharge fluctuation of upper Citarum River. As, in HBV model, groundwater recharge only partly incorporated, together with percolation. The IWSD value shows that both Q80% and Q90% of upstream part of Citarum River are able to fulfil the water demand of Jatiluhur Regency Industrial Estate at present, year 2031 and year 2041. The NRECA model is the most suitable hydrological model to represent the characteristics of upper Citarum river basin.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0127133