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Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan

The soil water assessment tool (SWAT) is a continuous and distributed hydrologic model created to simulate the effect of land management practices on water in the watershed. Understanding relationship of water extraction of groundwater can lead to better watershed management. The main problem in thi...

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Main Authors: Ebrahim, Mohammad Nazri, Mohamed Zawawi, Mohamed Azwan, Kamal, Md. Rowshon, Khairudin, Nurulhuda
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2020
Online Access:http://psasir.upm.edu.my/id/eprint/88868/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/88868/
http://www.ukm.my/jsm/english_journals/vol49num11_2020/vol49num11_2020pg2649-2658.html
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spelling my.upm.eprints.888682021-11-02T20:16:48Z http://psasir.upm.edu.my/id/eprint/88868/ Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan Ebrahim, Mohammad Nazri Mohamed Zawawi, Mohamed Azwan Kamal, Md. Rowshon Khairudin, Nurulhuda The soil water assessment tool (SWAT) is a continuous and distributed hydrologic model created to simulate the effect of land management practices on water in the watershed. Understanding relationship of water extraction of groundwater can lead to better watershed management. The main problem in this study is the complexity of recharge processes and limited observations in groundwater recharge in Malaysia makes it difficult to quantify. This study was done at Baung’s watershed (BW) which can be considered as an ungauged watershed. The estimation of groundwater recharge in BW was done using SWAT. However, BW cannot be calibrated due to lack of streams station availability but the uncalibrated SWAT able to provide satisfactory predictions on hydrologic budget. A framework for SWAT input data including hydrography, terrain, land-use, soil, and weather for BW was then focused in order to achieve the model simulation for ungauged basins. The results emphasize the importance and prospects of using accurate spatial input data for the physically based SWAT model. Normal condition, extreme-low precipitation and future in land-use development represented as scenarios 1, 2, and 3 were evaluated in this study. These conditions give different groundwater recharge rate as different scenarios give different impact to groundwater. Model was found to produce a reliable estimation of groundwater recharge of 405 mm/year (14.6%), 194.12 mm/year (11.1%), and 214.23 mm/year (7.7%) for scenarios 1, 2, and 3, respectively. In conclusion, it suggested that groundwater recharge should not be assumed always 6% of annual rainfall in Malaysia as the factors influencing groundwater recharge need to be took into consideration in assisting groundwater exploration and management. Penerbit Universiti Kebangsaan Malaysia 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88868/1/ABSTRACT.pdf Ebrahim, Mohammad Nazri and Mohamed Zawawi, Mohamed Azwan and Kamal, Md. Rowshon and Khairudin, Nurulhuda (2020) Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan. Sains Malaysiana, 49 (11). 2649 - 2658. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol49num11_2020/vol49num11_2020pg2649-2658.html 10.17576/jsm-2020-4911-04
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The soil water assessment tool (SWAT) is a continuous and distributed hydrologic model created to simulate the effect of land management practices on water in the watershed. Understanding relationship of water extraction of groundwater can lead to better watershed management. The main problem in this study is the complexity of recharge processes and limited observations in groundwater recharge in Malaysia makes it difficult to quantify. This study was done at Baung’s watershed (BW) which can be considered as an ungauged watershed. The estimation of groundwater recharge in BW was done using SWAT. However, BW cannot be calibrated due to lack of streams station availability but the uncalibrated SWAT able to provide satisfactory predictions on hydrologic budget. A framework for SWAT input data including hydrography, terrain, land-use, soil, and weather for BW was then focused in order to achieve the model simulation for ungauged basins. The results emphasize the importance and prospects of using accurate spatial input data for the physically based SWAT model. Normal condition, extreme-low precipitation and future in land-use development represented as scenarios 1, 2, and 3 were evaluated in this study. These conditions give different groundwater recharge rate as different scenarios give different impact to groundwater. Model was found to produce a reliable estimation of groundwater recharge of 405 mm/year (14.6%), 194.12 mm/year (11.1%), and 214.23 mm/year (7.7%) for scenarios 1, 2, and 3, respectively. In conclusion, it suggested that groundwater recharge should not be assumed always 6% of annual rainfall in Malaysia as the factors influencing groundwater recharge need to be took into consideration in assisting groundwater exploration and management.
format Article
author Ebrahim, Mohammad Nazri
Mohamed Zawawi, Mohamed Azwan
Kamal, Md. Rowshon
Khairudin, Nurulhuda
spellingShingle Ebrahim, Mohammad Nazri
Mohamed Zawawi, Mohamed Azwan
Kamal, Md. Rowshon
Khairudin, Nurulhuda
Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
author_facet Ebrahim, Mohammad Nazri
Mohamed Zawawi, Mohamed Azwan
Kamal, Md. Rowshon
Khairudin, Nurulhuda
author_sort Ebrahim, Mohammad Nazri
title Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
title_short Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
title_full Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
title_fullStr Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
title_full_unstemmed Evaluation of groundwater recharge based on climate change: a case study at Baung’s Watershed, Kota Bharu, Kelantan
title_sort evaluation of groundwater recharge based on climate change: a case study at baung’s watershed, kota bharu, kelantan
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/88868/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/88868/
http://www.ukm.my/jsm/english_journals/vol49num11_2020/vol49num11_2020pg2649-2658.html
_version_ 1717095414550757376
score 13.211869

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