Abstract
Understanding factors influencing groundwater chemistry in regional groundwater basins is important to prevent groundwater pollution especially in arid areas where rainfall is low and water resources are limited. The present study assesses such factors in the regional, geologically diverse, groundwater basin of Wadi Umairy in Oman. The basin is composed of five different lithostratigraphic units with different hydraulic properties. Water samples (41) have been collected from the different units and analyzed for the major ions. Factor analysis and conventional hydrochemical methods were used to define the factors that have significant impact on the aquifer's hydrochemistry. It was found that evaporation and mineral weathering/dissolution are the main factors defining the groundwater chemistry along the flow path from recharge to discharge zones, whereas anthropogenic activities and alkalinity are found to be of lesser effect, and the latter prevails when the rocks are predominantly monomineralic. It was concluded that in regional groundwater basins, recharge/discharge relations together with the flow scale control the hydrochemistry irrespective of lithological variation in the basin.
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Cloutier V, Lefebvre R, Therrien R, Savard MM (2008) Multivariate statistical analysis of geochemical data as indicative of the hydrogeochemical evolution of groundwater in a sedimentary rock aquifer system. J Hydrol 353:294–313
Dargon K (2006) Application of factor analysis to study contamination of a semi-confined aquifer (Wielkopolska Buried Valley aquifer, Poland). Journal of Hydrogeology 331:272–279
Davison WD (1984) The northern Oman mountains hydrologic area. In: The hydrology of the Sultanate of Oman, a preliminary assessment. report: PAWR 83-1 by the Public Authority for Water Resources (1984). Sultanate of Oman, p. 81
Dazy J, Razack M (1990) Hydrochemical characterization of groundwater mixing in sedimentary and metamorphic reservoirs with combined use of piper's principle and factor analysis. Journal of Hydrology JHYDA7 114(3/4):371–393, May 1990
Glennie KW (2005) The geology of the Oman mountains. Scientific Press Ltd. ISBN 0 901360 35 X. p. 109
Heathcote JA, King S (1998) UM Asamim Oman: a Sabkha with evidence for climate change. In: AlSharhan AS, Glennie KW, Whittle GL, Kendall CGSTC (eds) Quaternary Deserts Climatic Changes. A.A. Balkema, Rotterdam, pp 141–15. 90 5210 597 6
Hussein MT (2004) Hydrochemical evaluation of groundwater in the Blue Nile basin, Eastern Sudan, using conventional and multivariate techniques. Hydrogeol J 12:144–158
Kwarteng AY, Atsu DS, Vijaya K, Ganiga T (2008) Analysis of a 27-year rainfall data (1977–2003) in the Sultanate of Oman. Int J Climatol. doi:10.1002/joc.1727
Matter MJ, Waber HN, Loew S, Matter A (2005) Recharge areas and geochemical evolution of groundwater in alluvial aquifer system in Sultanate of Oman. Hydrogeol J 14:203–224
Ministry of Regional Municipalities and Water Resources (MRMWR) (1999) Dams in the Sultanate of Oman. Ministry of Regional Municipalities and Water Resources, Sultanate of Oman, p 122
Ministry of Regional Municipalities and Water Resources (MRMWR) (2000) National water resources master plan, main report. Ministry of Regional Municipalities and Water Resources, Sultanate of Oman
Ministry of Regional Municipalities and Water Resources (MRMWR) (2005) Provision of technical support for drilling and aquifer testing program in Dakhilyah and Sharqia Area. Ministry of Regional Municipalities and Water Resources, Sultanate of Oman
Omani Standards for Drinking Water (1998) Public authority of water and electricity. Muscat, Sultanate of Oman
Panda UC, Sundaray SK, Rath P, Nayak BB, Bahata D (2006) Application of factor and cluster analysis for characterization and estuarine water system—a case study: Mahanadi River (India). J Hydrol 331:434–445
Qannam Z (2002) A hydrogeological, hydrochemical and environmental study in Wadi Al Arroub drainage basin, southwest bank, Palestine. Freliberg On-Line Geosciences (FOG) ISSN 1434-7512 Vol. 9
Weddle TK and Loiselle M C (1996) Background water quality in significant sand and gravel aquifers in Maine. In: Loiselle M, Weddle TK and White C (eds), Selected papers on the hydrogeology of Maine: Geological Society of Maine, Bulletin 4, p. 53–80
WHO (2011) Guidelines for drinking-water quality, 4th edn. WHO, Geneva, p 541, ISBN 978 92 4 154815 1
Yammani SR, Reddy TVK, Reddy MRK (2008) Identification of influencing factors for groundwater quality variation using multivariate analysis. Environ Geol 55:9–16
Yidana MS, Ophori D, Yakubo BB (2007) A multivariate statistical analysis of surface water chemistry data, the Ankobra Basin, Ghana. J Environ Manag 86:80–87
Acknowledgments
The study was financed by project SR/SCI/ETHS/11/01 provided by His Majesty Trust Fund (HMTF). Thanks are also due to MRMWR for providing required data.
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Abdalla, O., Al-Abri, R.b.Y. Factors affecting groundwater chemistry in regional arid basins of variable lithology: example of Wadi Umairy, Oman. Arab J Geosci 7, 2861–2870 (2014). https://doi.org/10.1007/s12517-013-0981-7
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DOI: https://doi.org/10.1007/s12517-013-0981-7