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Investigation on the rainfall-runoff relationship for the Rompin river basin

Hydrological information derived from rainfall-runoff relationship are essential for efficient planning and management of watersheds. Flood and drought issues in a watershed are highly dependent on the hydrological analysis output for mitigation design purpose. Rainfall-runoff processes are unique f...

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Main Author: Chin, Man Sum
Format: Undergraduates Project Papers
Language:English
Published: 2018
Subjects:
TC Hydraulic engineering. Ocean engineering
Online Access:http://umpir.ump.edu.my/id/eprint/27864/1/Investigation%20on%20the%20rainfall-runoff%20relationship%20for%20the%20Rompin%20river.pdf
http://umpir.ump.edu.my/id/eprint/27864/
https://efind.ump.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=90918
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spelling my.ump.umpir.278642020-02-17T02:43:23Z http://umpir.ump.edu.my/id/eprint/27864/ Investigation on the rainfall-runoff relationship for the Rompin river basin Chin, Man Sum TC Hydraulic engineering. Ocean engineering Hydrological information derived from rainfall-runoff relationship are essential for efficient planning and management of watersheds. Flood and drought issues in a watershed are highly dependent on the hydrological analysis output for mitigation design purpose. Rainfall-runoff processes are unique for each basin and therefore needed to be modelled individually. Additionally, the raw hydrological data is also crucial and thus must be reliable to be applied in the modelling. This study aims to: 1) generate a rainfallrunoff relationship scheme for the Rompin River; 2) calibrate and validate the simulated rainfall-runoff streamflow by comparison with the observed data. The continuous rainfall-runoff modelling was carried out using HEC-HMS for both wet and dry period utilizing rainfall data from 6 gauging stations and streamflow data from 2 gauging stations within the Rompin River Basin. Clark Unit Hydrograph was selected as the transform method for this study with the Tc and R parameters estimated using Hydrological Procedure 27 which was developed by the Department of Irrigation and Drainage (DID) Malaysia. SCS Curve Number was used as the loss method to predict the direct runoff from precipitation. For the baseflow and lag routing, constant monthly was used. From the results obtained, Clark Unit Hydrograph showed better performances in modelling the wet period compared to the dry. For wet period, the RMSE and NSE value for the best model are 59.83 and -0.64. As for dry period, the RMSE and NSE value for the best model are 6.22 and -1.84. The model for wet period is producing similar flow pattern with overestimation of flow, however it is applicable if provided with soil map data. 2018-06 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/27864/1/Investigation%20on%20the%20rainfall-runoff%20relationship%20for%20the%20Rompin%20river.pdf Chin, Man Sum (2018) Investigation on the rainfall-runoff relationship for the Rompin river basin. Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang. https://efind.ump.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=90918
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TC Hydraulic engineering. Ocean engineering
spellingShingle TC Hydraulic engineering. Ocean engineering
Chin, Man Sum
Investigation on the rainfall-runoff relationship for the Rompin river basin
description Hydrological information derived from rainfall-runoff relationship are essential for efficient planning and management of watersheds. Flood and drought issues in a watershed are highly dependent on the hydrological analysis output for mitigation design purpose. Rainfall-runoff processes are unique for each basin and therefore needed to be modelled individually. Additionally, the raw hydrological data is also crucial and thus must be reliable to be applied in the modelling. This study aims to: 1) generate a rainfallrunoff relationship scheme for the Rompin River; 2) calibrate and validate the simulated rainfall-runoff streamflow by comparison with the observed data. The continuous rainfall-runoff modelling was carried out using HEC-HMS for both wet and dry period utilizing rainfall data from 6 gauging stations and streamflow data from 2 gauging stations within the Rompin River Basin. Clark Unit Hydrograph was selected as the transform method for this study with the Tc and R parameters estimated using Hydrological Procedure 27 which was developed by the Department of Irrigation and Drainage (DID) Malaysia. SCS Curve Number was used as the loss method to predict the direct runoff from precipitation. For the baseflow and lag routing, constant monthly was used. From the results obtained, Clark Unit Hydrograph showed better performances in modelling the wet period compared to the dry. For wet period, the RMSE and NSE value for the best model are 59.83 and -0.64. As for dry period, the RMSE and NSE value for the best model are 6.22 and -1.84. The model for wet period is producing similar flow pattern with overestimation of flow, however it is applicable if provided with soil map data.
format Undergraduates Project Papers
author Chin, Man Sum
author_facet Chin, Man Sum
author_sort Chin, Man Sum
title Investigation on the rainfall-runoff relationship for the Rompin river basin
title_short Investigation on the rainfall-runoff relationship for the Rompin river basin
title_full Investigation on the rainfall-runoff relationship for the Rompin river basin
title_fullStr Investigation on the rainfall-runoff relationship for the Rompin river basin
title_full_unstemmed Investigation on the rainfall-runoff relationship for the Rompin river basin
title_sort investigation on the rainfall-runoff relationship for the rompin river basin
publishDate 2018
url http://umpir.ump.edu.my/id/eprint/27864/1/Investigation%20on%20the%20rainfall-runoff%20relationship%20for%20the%20Rompin%20river.pdf
http://umpir.ump.edu.my/id/eprint/27864/
https://efind.ump.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=90918
_version_ 1662754792846393344
score 13.211869

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