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The effect of temporal resolution of input rainfall data in hydrological modelling at urban catchment

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dc.contributor.authorChow M.F.en_US
dc.contributor.authorHaris H.en_US
dc.contributor.authorLeong Y.X.en_US
dc.contributor.authorid57214146115en_US
dc.contributor.authorid57191870496en_US
dc.contributor.authorid57223339380en_US
dc.date.accessioned2023-05-29T09:07:52Z
dc.date.available2023-05-29T09:07:52Z
dc.date.issued2021
dc.description.abstractThe process of urbanization with increasing population and development has drastically disrupted the water balance of natural catchment. The variation in hydrological responses due to rainfall and land use changes increases the difficulty on rainfall-runoff modelling. In addition, large uncertainties in rainfall data can be a significant source of error in flood simulation. Thus, the objective of this study is to compare the temporal resolution effects between 15 min and 1-hour rainfall data on hydrological modelling at urban catchment. 15 min and 1-hour resolution rainfall data was collected from eight rainfall stations at Penchala River catchment. The temporal resolution effects of rainfall data on hydrological modelling were assessed by comparing 15 min resolution and 1-hour resolution rainfall data using HEC-HMS model. The modelling results showed that average peak discharge percentage errors for 1-hour rainfall interval is 15.79 %, whereas 4.33% for 15 minutes' rainfall interval. The fine resolution rainfall data has proved that it had improved the performance of hydrological modelling using HEC-HMS model. For model calibration, the mean percentage errors for peak discharge and runoff volume were found to be 4.33% and 20.88%, respectively. Meanwhile, the mean percentage errors for peak discharge and runoff volume for model validation were found to be 16.25% and 16.51%, respectively. � 2021 American Institute of Physics Inc.. All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo20074
dc.identifier.doi10.1063/5.0044479
dc.identifier.scopus2-s2.0-85105609257
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85105609257&doi=10.1063%2f5.0044479&partnerID=40&md5=834702ca5baa165c9d609daaf33f9007
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/26216
dc.identifier.volume2339
dc.publisherAmerican Institute of Physics Inc.en_US
dc.sourceScopus
dc.sourcetitleAIP Conference Proceedings
dc.titleThe effect of temporal resolution of input rainfall data in hydrological modelling at urban catchmenten_US
dc.typeConference Paperen_US
dspace.entity.typePublication
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