$Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa$
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Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa

This study estimated groundwater recharge response from rainfall events in a semi-arid fractured aquifer. This is crucial as recharge response has an influence on available groundwater in an aquifer. Groundwater levels were modelled and used to evaluate the response of groundwater recharge from rain...

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Autores principales:	P. Nemaxwi, J.O. Odiyo, R. Makungo
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2019
Materias:	chloride mass balance earth model fractured aquifer groundwater recharge semi-arid Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/1cfddb1255e74ab3819d87294a8d7d7a
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spelling	oai:doaj.org-article:1cfddb1255e74ab3819d87294a8d7d7a2021-11-04T15:51:56ZEstimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa2331-191610.1080/23311916.2019.1635815https://doaj.org/article/1cfddb1255e74ab3819d87294a8d7d7a2019-01-01T00:00:00Zhttp://dx.doi.org/10.1080/23311916.2019.1635815https://doaj.org/toc/2331-1916This study estimated groundwater recharge response from rainfall events in a semi-arid fractured aquifer. This is crucial as recharge response has an influence on available groundwater in an aquifer. Groundwater levels were modelled and used to evaluate the response of groundwater recharge from rainfall events using Extended model for Aquifer Recharge and soil moisture Transport through unsaturated Hard rock (EARTH) model. Chloride Mass Balance (CMB) method was also used to estimate groundwater recharge in quaternary catchment A91H. Calculated local recharge using CMB method was interpolated in ARCGIS to generate groundwater recharge distribution maps. Estimated local recharge using CMB method ranged from 0.24 to 8.8 mm/a (0.04–1.3% mean annual precipitation (MAP)). Estimated recharge using EARTH model ranged from 3 to 10.3% of 656 mm of MAP. The average recharge was 6.12% of the MAP, equivalent to 40.1 mm/a. EARTH model and CMB method yielded results which were found to be in the same ranges to those obtained from other studies. Rapid—intermediate recharge response mechanism was identified in the study. The results confirmed and expanded knowledge on the nature of groundwater recharge response from rainfall in fractured aquifers in semi-arid areas and the applicability of EARTH model and CMB method in recharge estimation.P. NemaxwiJ.O. OdiyoR. MakungoTaylor & Francis Grouparticlechloride mass balanceearth modelfractured aquifergroundwater rechargesemi-aridEngineering (General). Civil engineering (General)TA1-2040ENCogent Engineering, Vol 6, Iss 1 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	chloride mass balance earth model fractured aquifer groundwater recharge semi-arid Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	chloride mass balance earth model fractured aquifer groundwater recharge semi-arid Engineering (General). Civil engineering (General) TA1-2040 P. Nemaxwi J.O. Odiyo R. Makungo Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
description	This study estimated groundwater recharge response from rainfall events in a semi-arid fractured aquifer. This is crucial as recharge response has an influence on available groundwater in an aquifer. Groundwater levels were modelled and used to evaluate the response of groundwater recharge from rainfall events using Extended model for Aquifer Recharge and soil moisture Transport through unsaturated Hard rock (EARTH) model. Chloride Mass Balance (CMB) method was also used to estimate groundwater recharge in quaternary catchment A91H. Calculated local recharge using CMB method was interpolated in ARCGIS to generate groundwater recharge distribution maps. Estimated local recharge using CMB method ranged from 0.24 to 8.8 mm/a (0.04–1.3% mean annual precipitation (MAP)). Estimated recharge using EARTH model ranged from 3 to 10.3% of 656 mm of MAP. The average recharge was 6.12% of the MAP, equivalent to 40.1 mm/a. EARTH model and CMB method yielded results which were found to be in the same ranges to those obtained from other studies. Rapid—intermediate recharge response mechanism was identified in the study. The results confirmed and expanded knowledge on the nature of groundwater recharge response from rainfall in fractured aquifers in semi-arid areas and the applicability of EARTH model and CMB method in recharge estimation.
format	article
author	P. Nemaxwi J.O. Odiyo R. Makungo
author_facet	P. Nemaxwi J.O. Odiyo R. Makungo
author_sort	P. Nemaxwi
title	Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
title_short	Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
title_full	Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
title_fullStr	Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
title_full_unstemmed	Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa
title_sort	estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: case study of quaternary catchment a91h, limpopo province, south africa
publisher	Taylor & Francis Group
publishDate	2019
url	https://doaj.org/article/1cfddb1255e74ab3819d87294a8d7d7a
work_keys_str_mv	AT pnemaxwi estimationofgroundwaterrechargeresponsefromrainfalleventsinasemiaridfracturedaquifercasestudyofquaternarycatchmenta91hlimpopoprovincesouthafrica AT joodiyo estimationofgroundwaterrechargeresponsefromrainfalleventsinasemiaridfracturedaquifercasestudyofquaternarycatchmenta91hlimpopoprovincesouthafrica AT rmakungo estimationofgroundwaterrechargeresponsefromrainfalleventsinasemiaridfracturedaquifercasestudyofquaternarycatchmenta91hlimpopoprovincesouthafrica
_version_	1718444699754168320

Estimation of groundwater recharge response from rainfall events in a semi-arid fractured aquifer: Case study of quaternary catchment A91H, Limpopo Province, South Africa

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