The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer

Groundwater depletion poses a major threat to global groundwater resources with increasing trends due to natural and anthropogenic activities. This study presents a surface-groundwater framework for water resources modelling of ill-posed problems in hydrogeologically data-scarce areas. The proposed...

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Autores principales:	G. Tziatzios, P. Sidiropoulos, L. Vasiliades, A. Lyra, N. Mylopoulos, A. Loukas
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	groundwater modelling groundwater recharge pilot points Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/eb08cb02de684d7ea582095935be5730
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spelling	oai:doaj.org-article:eb08cb02de684d7ea582095935be57302021-11-06T10:07:39ZThe use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer1606-97491607-079810.2166/ws.2021.133https://doaj.org/article/eb08cb02de684d7ea582095935be57302021-09-01T00:00:00Zhttp://ws.iwaponline.com/content/21/6/2633https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Groundwater depletion poses a major threat to global groundwater resources with increasing trends due to natural and anthropogenic activities. This study presents a surface-groundwater framework for water resources modelling of ill-posed problems in hydrogeologically data-scarce areas. The proposed framework is based on the application of a conceptual water balance model and composed of surface hydrological (UTHBAL) and groundwater flow simulation with the integration of a Newton formulation of the MODFLOW-2005 code (MODFLOW-NWT) and PEST suite modules. The groundwater simulation includes a preprocessor tool for automated calibration and a post-processor tool for automated validation. The methodology was applied to a rural region of Central Greece, Lake Karla Basin, which is degraded due to groundwater resources overexploitation to cover irrigation water demands. The aquifer is modelled focusing on a precise simulation–validation procedure of the conceptual model. The groundwater model was calibrated with the calibration preprocessor tool for spatially distributed hydraulic conductivity with the pilot points method. The calibration process achieved satisfactory results as validated by the post-process analysis of observed and simulated water levels. The findings for the groundwater budget indicate that the groundwater system is still under intense pressure even though farming activity in recent years has turned to less water-intensive crops. HIGHLIGHT My research deals with the pilot points method on groundwater modelling in an area with scarce hydrogeologic data.;G. TziatziosP. SidiropoulosL. VasiliadesA. LyraN. MylopoulosA. LoukasIWA Publishingarticlegroundwater modellinggroundwater rechargepilot pointsWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 6, Pp 2633-2645 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	groundwater modelling groundwater recharge pilot points Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	groundwater modelling groundwater recharge pilot points Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 G. Tziatzios P. Sidiropoulos L. Vasiliades A. Lyra N. Mylopoulos A. Loukas The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
description	Groundwater depletion poses a major threat to global groundwater resources with increasing trends due to natural and anthropogenic activities. This study presents a surface-groundwater framework for water resources modelling of ill-posed problems in hydrogeologically data-scarce areas. The proposed framework is based on the application of a conceptual water balance model and composed of surface hydrological (UTHBAL) and groundwater flow simulation with the integration of a Newton formulation of the MODFLOW-2005 code (MODFLOW-NWT) and PEST suite modules. The groundwater simulation includes a preprocessor tool for automated calibration and a post-processor tool for automated validation. The methodology was applied to a rural region of Central Greece, Lake Karla Basin, which is degraded due to groundwater resources overexploitation to cover irrigation water demands. The aquifer is modelled focusing on a precise simulation–validation procedure of the conceptual model. The groundwater model was calibrated with the calibration preprocessor tool for spatially distributed hydraulic conductivity with the pilot points method. The calibration process achieved satisfactory results as validated by the post-process analysis of observed and simulated water levels. The findings for the groundwater budget indicate that the groundwater system is still under intense pressure even though farming activity in recent years has turned to less water-intensive crops. HIGHLIGHT My research deals with the pilot points method on groundwater modelling in an area with scarce hydrogeologic data.;
format	article
author	G. Tziatzios P. Sidiropoulos L. Vasiliades A. Lyra N. Mylopoulos A. Loukas
author_facet	G. Tziatzios P. Sidiropoulos L. Vasiliades A. Lyra N. Mylopoulos A. Loukas
author_sort	G. Tziatzios
title	The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
title_short	The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
title_full	The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
title_fullStr	The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
title_full_unstemmed	The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer
title_sort	use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of lake karla aquifer
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/eb08cb02de684d7ea582095935be5730
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The use of the pilot points method on groundwater modelling for a degraded aquifer with limited field data: the case of Lake Karla aquifer

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