Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan
The landforms and human activities play important roles in quantifying surface water and groundwater interactions (SGIs) for water resources management. The study uses the groundwater and surface-water FLOW model (GSFLOW) model to quantify the dynamics of SGIs in the Pingtung Plain groundwater basin...
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doaj-4debed3dd3e448b1a049d5fdf69b68e02020-11-25T04:00:26ZengMDPI AGApplied Sciences2076-34172020-10-01107152715210.3390/app10207152Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, TaiwanQuoc-Dung Tran0Chuen-Fa Ni1I-Hsien Lee2Minh-Hoang Truong3Chien-Jung Liu4Graduate Institute of Applied Geology, National Central University, Taoyuan City 32001, TaiwanGraduate Institute of Applied Geology, National Central University, Taoyuan City 32001, TaiwanGraduate Institute of Applied Geology, National Central University, Taoyuan City 32001, TaiwanDepartment of Geology, University of Science Ho Chi Minh City, Ho Chi Minh City 700000, VietnamInstitute of Water Resources Development, Feng Chia University, Taichung City 40724, TaiwanThe landforms and human activities play important roles in quantifying surface water and groundwater interactions (SGIs) for water resources management. The study uses the groundwater and surface-water FLOW model (GSFLOW) model to quantify the dynamics of SGIs in the Pingtung Plain groundwater basin (PPGB) in southern Taiwan. Specifically, the study uses a physical-based numerical model to quantify the spatial and seasonal variations of water cycles influenced by complex fluvial landform conditions and human activities. Results of the model calibrations show good agreement with the data obtained from the available groundwater monitoring network and the selected stream stations. The basin-scale water budgets show highly nonuniform precipitation in the study area, and over 80% annual precipitation is from wet seasons in the PPGB. With high permeable surficial deposits in the PPGB, the year-averaged surface runoff and infiltration are approximately 57% and 40% of the total precipitation. The fluvial landforms with the high slope in the PPGB lead to 70% of annual surface runoff that becomes the streamflow, and the interflow dominates water interactions near streambeds. Results show that the interflow rate in the wet seasons is 200% more than that in the dry seasons. The net groundwater discharge to the streams is relatively small as compared to the interflow. Only 10% of the river flow is from the net groundwater discharge. In the PPGB, The pumping-induced variations of groundwater levels are insignificant as compared with the factor of the natural landforms. Because of the relatively small area of the proposed artificial lake, the contribution of the artificial lake on the local water budgets is insignificant, indicating the low impact of the artificial recharge lake on the surface water environment.https://www.mdpi.com/2076-3417/10/20/7152GSFLOWsurface water and groundwater interactionnumerical modelartificial lakewater budgets |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Quoc-Dung Tran Chuen-Fa Ni I-Hsien Lee Minh-Hoang Truong Chien-Jung Liu |
spellingShingle |
Quoc-Dung Tran Chuen-Fa Ni I-Hsien Lee Minh-Hoang Truong Chien-Jung Liu Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan Applied Sciences GSFLOW surface water and groundwater interaction numerical model artificial lake water budgets |
author_facet |
Quoc-Dung Tran Chuen-Fa Ni I-Hsien Lee Minh-Hoang Truong Chien-Jung Liu |
author_sort |
Quoc-Dung Tran |
title |
Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan |
title_short |
Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan |
title_full |
Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan |
title_fullStr |
Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan |
title_full_unstemmed |
Numerical Modeling of Surface Water and Groundwater Interactions Induced by Complex Fluvial Landforms and Human Activities in the Pingtung Plain Groundwater Basin, Taiwan |
title_sort |
numerical modeling of surface water and groundwater interactions induced by complex fluvial landforms and human activities in the pingtung plain groundwater basin, taiwan |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-10-01 |
description |
The landforms and human activities play important roles in quantifying surface water and groundwater interactions (SGIs) for water resources management. The study uses the groundwater and surface-water FLOW model (GSFLOW) model to quantify the dynamics of SGIs in the Pingtung Plain groundwater basin (PPGB) in southern Taiwan. Specifically, the study uses a physical-based numerical model to quantify the spatial and seasonal variations of water cycles influenced by complex fluvial landform conditions and human activities. Results of the model calibrations show good agreement with the data obtained from the available groundwater monitoring network and the selected stream stations. The basin-scale water budgets show highly nonuniform precipitation in the study area, and over 80% annual precipitation is from wet seasons in the PPGB. With high permeable surficial deposits in the PPGB, the year-averaged surface runoff and infiltration are approximately 57% and 40% of the total precipitation. The fluvial landforms with the high slope in the PPGB lead to 70% of annual surface runoff that becomes the streamflow, and the interflow dominates water interactions near streambeds. Results show that the interflow rate in the wet seasons is 200% more than that in the dry seasons. The net groundwater discharge to the streams is relatively small as compared to the interflow. Only 10% of the river flow is from the net groundwater discharge. In the PPGB, The pumping-induced variations of groundwater levels are insignificant as compared with the factor of the natural landforms. Because of the relatively small area of the proposed artificial lake, the contribution of the artificial lake on the local water budgets is insignificant, indicating the low impact of the artificial recharge lake on the surface water environment. |
topic |
GSFLOW surface water and groundwater interaction numerical model artificial lake water budgets |
url |
https://www.mdpi.com/2076-3417/10/20/7152 |
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