Rusinga, FTaigbenu, AE2007-06-292007-06-292005-01Rusinga, F and Taigbenu, AE. 2005. Groundwater resource evaluation of urban Bulawayo aquifer. Water SA, vol. 31(1), pp 23-340378-4738http://hdl.handle.net/10204/736copyright: 2005 Water Research CommissionJudicious management of a groundwater system requires an understanding of its hydrogeology and response to various recharge and pumping stresses. However, in developing countries, groundwater resource evaluations are hampered by a lack of adequate data that will allow for its complete characterisation. Under such circumstances it is not uncommon for ad hoc groundwater management measures to be embarked upon, especially during drought conditions. These were the conditions that existed during the 1991/92 drought when the CSIR Stellenbosch evaluated the groundwater resources of an urban aquifer in Bulawayo, Zimbabwe. Their recommendations revealed that about 3.5x10(6) m(3)/a could be safely abstracted from the aquifer. In this work, a more comprehensive hydrogeological investigation was carried out which included pumping tests, estimation of abstraction rates and recharges, and numerical modelling of the aquifer. The investigations indicate that the aquifer is unconfined with hydraulic conductivity and specific yield ranging from 0.1 m/d to 2.09 m/d and 0.02 to 0.11, respectively. Recharge estimates indicate an annual recharge of 105.5 mm with 38.4%, 52.1% and 9.5% accounting respectively for direct recharge, water mains and sewer leakages. Furthermore, a long-term sustainable annual abstraction of 6.1x10(6) m(3) or 15% of current city water demand can be obtained from the aquifer.enGroundwater flowPumping testsUrban groundwaterNumerical modellingGroundwater resource evaluationWater resourcesArticleRusinga, F., & Taigbenu, A. (2005). Groundwater resource evaluation of urban Bulawayo aquifer. http://hdl.handle.net/10204/736Rusinga, F, and AE Taigbenu "Groundwater resource evaluation of urban Bulawayo aquifer." (2005) http://hdl.handle.net/10204/736Rusinga F, Taigbenu A. Groundwater resource evaluation of urban Bulawayo aquifer. 2005; http://hdl.handle.net/10204/736.TY - Article AU - Rusinga, F AU - Taigbenu, AE AB - Judicious management of a groundwater system requires an understanding of its hydrogeology and response to various recharge and pumping stresses. However, in developing countries, groundwater resource evaluations are hampered by a lack of adequate data that will allow for its complete characterisation. Under such circumstances it is not uncommon for ad hoc groundwater management measures to be embarked upon, especially during drought conditions. These were the conditions that existed during the 1991/92 drought when the CSIR Stellenbosch evaluated the groundwater resources of an urban aquifer in Bulawayo, Zimbabwe. Their recommendations revealed that about 3.5x10(6) m(3)/a could be safely abstracted from the aquifer. In this work, a more comprehensive hydrogeological investigation was carried out which included pumping tests, estimation of abstraction rates and recharges, and numerical modelling of the aquifer. The investigations indicate that the aquifer is unconfined with hydraulic conductivity and specific yield ranging from 0.1 m/d to 2.09 m/d and 0.02 to 0.11, respectively. Recharge estimates indicate an annual recharge of 105.5 mm with 38.4%, 52.1% and 9.5% accounting respectively for direct recharge, water mains and sewer leakages. Furthermore, a long-term sustainable annual abstraction of 6.1x10(6) m(3) or 15% of current city water demand can be obtained from the aquifer. DA - 2005-01 DB - ResearchSpace DP - CSIR KW - Groundwater flow KW - Pumping tests KW - Urban groundwater KW - Numerical modelling KW - Groundwater resource evaluation KW - Water resources LK - https://researchspace.csir.co.za PY - 2005 SM - 0378-4738 T1 - Groundwater resource evaluation of urban Bulawayo aquifer TI - Groundwater resource evaluation of urban Bulawayo aquifer UR - http://hdl.handle.net/10204/736 ER -