Major ion hydrochemistry and environmental isotope signatures as a tool in assessing groundwater occurrence and its dynamics in a fractured volcanic aquifer system located within a heavily urbanized catchment, central Ethiopia

Hydrogeological framework and occurrence of groundwater in the Ethiopian aquifers

“…Generally two approaches were followed to estimate the groundwater recharge; (1) conventional water balance and (2) discharge analysis (Ayenew, 1998;Hagos, 2006;Demlie et al, 2008). In few areas chloride mass balance and soil-water balance methods were used (Ayenew, 1998;Demlie et al, 2008).…”

“…In few areas chloride mass balance and soil-water balance methods were used (Ayenew, 1998;Demlie et al, 2008). In some cases indirect recharge from rivers was estimated based on systematic discharge measurements with the help of current meters.…”

“…In Addis Ababa and provincial towns groundwater is polluted with coli bacteria, heavy metals and nitrate (Yitayew, 2004;Alemayehu et al, 2005;Demlie et al, 2008). Trace metals were reported in the thermal waters of ZSB (UNDP, 1973).…”

Groundwater isotopic variations in a uranium mining site: subsidies for contamination studies

“…Stable and radioactive environmental isotopes have been used for more than four decades to study hydrological systems and it has been proved that they are particularly useful for understanding groundwater dynamics [19,20]. These tools have been applied to identify sources and mechanisms of groundwater recharge [21,22,23,24], and interactions between surface and groundwater [25,26].…”

Contaminant transfer and hydrodispersiveparameters in basaltic lava flows: artificial tracertest and implications for long-term management

“…Exploitation of volcanic groundwater is vital in many locations around the world [1][2][3][4][5][6][7][8][9][10][11][12] therefore management and international policy (e.g., [13]) implementation of resource and related ecosystem protection [14][15][16][17] require the assessment of volcanic aquifer vulnerability to pollution in the context of local and global anthropogenic pressures.…”