Groundwater

A Fortune 50 company implemented a remediation project to collect and treat polluted groundwater
A Fortune 50 company implemented a remediation project to collect and treat polluted groundwater .additional-class-976276207 { text-decoration: inherit; display: inline-block; speak: none; } .additional-class-976276207:before { font-family: 'Billion Web Font'; font-style: normal; font-weight: normal; text-decoration: inherit; text-align: center; text-transform: none; width: 1em; }.additional-class-976276207:before {width: auto; visibility: inherit;}.additional-class-976276207:before{display: inline-block;}.additional-class-976276207:before { vertical-align: middle; text-decoration: none; }.additional-class-976276207:hover { text-decoration: inherit; display: inline-block; speak: none; } .additional-class-976276207:hover:before { font-family: 'Billion Web Font'; font-style: normal; font-weight: normal; text-decoration: inherit; text-align: center; text-transform: none; width: 1em; }.additional-class-976276207:hover:before {width: auto; visibility: inherit;}.additional-class-976276207:hover:before{display: inline-block;}.additional-class-976276207:hover:before { vertical-align: middle; text-decoration: none; } Read more
Africa Droughts: It’s Time To Start Pumping Untapped Groundwater
Africa Droughts: It’s Time To Start Pumping Untapped Groundwater .additional-class-1538830620 { text-decoration: inherit; display: inline-block; speak: none; } .additional-class-1538830620:before { font-family: 'Billion Web Font'; font-style: normal; font-weight: normal; text-decoration: inherit; text-align: center; text-transform: none; width: 1em; }.additional-class-1538830620:before {width: auto; visibility: inherit;}.additional-class-1538830620:before{display: inline-block;}.additional-class-1538830620:before { vertical-align: middle; text-decoration: none; }.additional-class-1538830620:hover { text-decoration: inherit; display: inline-block; speak: none; } .additional-class-1538830620:hover:before { font-family: 'Billion Web Font'; font-style: normal; font-weight: normal; text-decoration: inherit; text-align: center; text-transform: none; width: 1em; }.additional-class-1538830620:hover:before {width: auto; visibility: inherit;}.additional-class-1538830620:hover:before{display: inline-block;}.additional-class-1538830620:hover:before { vertical-align: middle; text-decoration: none; } Read more
An appraisal of diverse factors influencing long-term success of groundwater schemes for domestic water supplies, focusing on priority areas in South Africa (Cobbling et al., 2014)
This study has examined the reliability or sustainability of groundwater-based domestic water supplies, and concluded that the issue of Operation and Maintenance (O&M) is the single biggest factor in ensuring long-term success. Normally the responsibility of the municipal Water Services Provider, or its appointed Professional Services Provider, O&M is often underfunded or overlooked altogether. Better O&M not only ensures much higher levels of reliability and continuity of water supply, it has been proven to actually save money in the long-term. (Read more)
Artificial groundwater recharge: water storage opportunities for South Africa (Murray, 2011)
This is a presentation from Groundwater Africa at the WRC 40-year Celebration Conference in 2011. The presentation discusses the potential opportunities in South Africa for storing water via groundwater recharge for use when needed. (See presentation)
Artificial groundwater recharge: Wise water management for towns and cities (Murray 2004)
This booklet is written for those who are involved in water planning, management and supply from large-scale, city supplies to smallscale town and village supplies. It describes artificial groundwater recharge a method of managing water wisely by optimising subsurface storage. The booklet covers the key issues that affect the success of artificial recharge schemes and provides case studies from Southern Africa. (Read more)
Assessment of groundwater potential in fractured hard rocks around Vryburg, North West Province, South Africa (Tessema, Nzotta, and Chirenje, 2014)
In this study, investigation of groundwater potential in crystalline basement rocks of the North West Province was carried out. The area of study is located in the Naledi Local Municipality situated in the central part of the North West Province. It covers an area of ~7260 km2 and consists of 8 Quaternary catchments. Hydrogeologically, a large part of the area falls within the Lower Vaal catchment. The average annual precipitation in the area is ~350 mm and temperature varies from very cold (below freezing point) to 350 C during the warm seasons. Groundwater recharge in the area is low (<10 mm) and largely depends on temperature and the seasonality and intensity of rainfall. Potential evaporation rate ranges from 1960 mm to 2100 mm per annum, exceeding annual rainfall. It is typically a semi-arid to arid region, and groundwater is the main source of water supply for domestic and agricultural use. The resulting map shows a number of groundwater potential zones varying from “very good” to “very poor”. The zone shown as ‘very good’ and ‘good’ groundwater potential covers ~17% and ~22% of the study area, respectively. (Read more)
Characteristics of local groundwater recharge cycles in South African semi-arid hard rock terrains - rainwater input (Van Wyk, van Tonder, and Vermeulen, 2011)
Rainfall events in semi-arid regions of South Africa are characteristically erratic in terms of depths and recurrence rates. Chemical assessment of cyclic rainwater has recognised 3 intervals, spaced over the hydrological cycle, reporting diverse hydrochemical compositions of rainwater in winter and summer rainfall regions. (Read more)
Hydrogeology of basement aquifers in the Limpopo Province (Witthuser et al., 2011)
Almost the whole continent of Africa is underlain by crystalline Basement rocks, albeit in places under a thick cover of more recent material. Consequently, crystalline Basement rocks form the largest of the four major aquifer domains or “hydrogeological provinces” found in sub-Saharan Africa, covering about 40% of the region’s 23.6 million square kilometres. Crystalline Basement aquifers differ in important ways from other aquifer types, and demand specific knowledge and techniques if groundwater is to be extracted and managed efficiently. The study covered two distinct geological and morpho-structural domains within the Limpopo Province, the Limpopo Plateau in the west and the Letaba Lowveld in the east, together covering about 23 500 km2. The basement rocks of the Limpopo Province are structurally complex, shaped by multiple tectono-metamorphic events spanning at least 600 million years. The borehole dataset compiled for the study consisted of over 8 000 boreholes contained in the Groundwater Resources Information Project (GRIP) Limpopo database of the South African Department of Water Affairs.  (Read more)
Potential climate change impacts on Karoo Aquifers (Dennis et al., 2013)
The potential impacts of climate change on water resources and hydrology for Africa and Southern Africa have received considerable attention from hydrologists during the last decade. However, very little research has been conducted on the future impact of climate change on groundwater resources in South Africa. Climate change can affect groundwater levels, recharge and groundwater contribution to baseflow. This document serves as a first step in assessing the impact of climate change on South African Karoo aquifers. (Read more)
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