Version 1
: Received: 10 September 2024 / Approved: 10 September 2024 / Online: 11 September 2024 (11:04:58 CEST)
How to cite:
Munajat, C. M.; Darsono, S. L. W.; Harlan, D. Performance Evaluation of Hydrological Models Using GR4J Rainfall-Runoff Model for Developed Watersheds in Java Island. Preprints2024, 2024090844. https://doi.org/10.20944/preprints202409.0844.v1
Munajat, C. M.; Darsono, S. L. W.; Harlan, D. Performance Evaluation of Hydrological Models Using GR4J Rainfall-Runoff Model for Developed Watersheds in Java Island. Preprints 2024, 2024090844. https://doi.org/10.20944/preprints202409.0844.v1
Munajat, C. M.; Darsono, S. L. W.; Harlan, D. Performance Evaluation of Hydrological Models Using GR4J Rainfall-Runoff Model for Developed Watersheds in Java Island. Preprints2024, 2024090844. https://doi.org/10.20944/preprints202409.0844.v1
APA Style
Munajat, C. M., Darsono, S. L. W., & Harlan, D. (2024). Performance Evaluation of Hydrological Models Using GR4J Rainfall-Runoff Model for Developed Watersheds in Java Island. Preprints. https://doi.org/10.20944/preprints202409.0844.v1
Chicago/Turabian Style
Munajat, C. M., Sri Legowo W. Darsono and Dhemi Harlan. 2024 "Performance Evaluation of Hydrological Models Using GR4J Rainfall-Runoff Model for Developed Watersheds in Java Island" Preprints. https://doi.org/10.20944/preprints202409.0844.v1
Abstract
Abstract: GR4J (Genie Rural a 4 parame`tres Journalier) is a rainfall-runoff model widely used to modelling rainfall into discharge. In this model, the input data used are daily rainfall and evapotranspiration data, calibrated using daily observed discharge data. This model seeks the optimum parameter value that produces the minimum deviation or error. The Nash-Sutcliffe Coefficient and Relative Volume Error (RVE) are used to estimate the errors that occur. One of the modelling parameters, namely X4 (peak time), has a value that does not match the observed hydrograph peak time (Tp). For this reason, it is necessary to adjust the modelling equation so that the unit hydrograph of the model appropriately in terms of value and shape with observed unit hydrograph. This study examines ten watersheds in Java Island so that it is expected to represent catchment conditions in tropical areas and developing countries. A relationship was obtained between the difference peak time from modelling (X4) and observed Tp. Adjustments Formula can be made to the general GR4J modelling equation for unit hydrograph in Java Island watersheds.
Keywords
GR4J rainfall-runoff model; observed unit hydrograph; synthetic unit hydrograph; Nash-Sutcliffe coefficient; Java Island watershed.
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
