Surface Water and Groundwater Interaction in the Upper Crocodile River Basin, Johannesburg, South Africa: Environmental Isotope Approach

Origin and residence time of shallow groundwater resources in Lagos coastal basin, south-west Nigeria: An isotopic approach

“…Surface water and groundwater interaction studies are vital to implementing effective management of water resources ( Winter, 1999 ; Sophocleous, 2002 ; Abiye, 2013 ). It is a known fact that well-managed water resources are vital for sustainable socio-economic development ( Abiye, 2013 ).…”

“…Surface water and groundwater interaction studies are vital to implementing effective management of water resources ( Winter, 1999 ; Sophocleous, 2002 ; Abiye, 2013 ). It is a known fact that well-managed water resources are vital for sustainable socio-economic development ( Abiye, 2013 ). Groundwater plays a vital role in determining the social and economic growth of Lagos and acts as the major source of potable water supply to a vast majority of the coastal city inhabitants ( Akoteyan and Soladoye, 2011 ; NERC, 2003 ).…”

“…Groundwater plays a vital role in determining the social and economic growth of Lagos and acts as the major source of potable water supply to a vast majority of the coastal city inhabitants ( Akoteyan and Soladoye, 2011 ; NERC, 2003 ). Hence, it is imperative to understand the hydrogeological environment (topography, geology, and climate) in order to investigate groundwater-surface water interactions ( Sphocleous, 2002 ; Abiye, 2013 ). Lagos is located within the southwest of Nigeria coastal domain (6 ◦ 34ʹ 50ʺ North and 3 ◦ 19ʹ 59ʺ East) comprising dominantly of lagoons and coastal creeks developed by a barrier of beaches and situated on series of stratified sedimentary rocks consisting of silts, clay, peats or coal associated with coastal plants ( Oyedele and Momoh, 2009 ).…”

“…The most common approach used to solve this problem is to adopt environmental isotopes technique; an important tool in hydrogeological studies that is specifically not known to the Lagos coastal basin (LCB) prior to this research. The stable isotopes of 2 H and 18 O occur naturally in precipitation and provide a seasonal meteoric signal in temperate, continental systems that are often attenuated in shallow groundwater ( Clarks and Fritz, 1997 ; Abiye, 2013 ). Environmental isotopes, (stable and radiogenic) as a tool for hydrogeological studies are gaining popularity in recent times and have been used to gain some insight into the subsurface flow and recharge condition ( Abiye, 2011 ).…”

Effectiveness of wetlands in retaining metals from mine water, South Africa

“…The decanting mine water from numerous abandoned shafts into the wetlands is the most common hydrological process in the area due to the recovery of groundwater level at least after three decades of mine closure (Holland & Witthusser 2009;Hobbs 2011;Abiye 2014;Abiye et al 2015). Unfortunately, the high level of decanting acidic water into the wetlands is beyond the treatment level.…”