Assessing Temporal and Spatial Variations of Groundwater Quality (A case study: Kohpayeh-Segzi)

Journal of Rangeland Science

مقاله 5، دوره 1، شماره 3، تیر 2011، صفحه 193-202   

نوع مقاله: Research and Full Length Article

نویسندگان

Kh. Ebrahimi^{* 1}؛ S. Feiznia²؛ M. Jannat rostami²؛ kh. Ausati³

¹Faculty of Natural Resources, University of Tehran, Karaj

²Faculty of Natural Resources, University of Tehran, Karaj,

³Watershed Management, University of Tehran and member of Young Researchers Club of Kurdistan.

چکیده

Assessing the quality of groundwater is important to ensure the sustainable
safe use of these resources. However, describing the overall water quality condition is
difficult due to the spatial variability of multiple contaminants and the wide range of
indicators (chemical, physical and biological) that could be measured. Therefore, in this
case study, some water quality parameters including Na, Mg, Cl, K, and pH, SAR, TDS,
Th, Co3, HCo3, So4, Ca and EC of 34 wells and 16 qanats have been monitored and
analyzed in a 15 year period. After collecting data, the main affecting factors on water
quality of wells and qantas were determined separately by factor analysis test. Zoning
maps were generated in Arc GIS on the basis of most important effective factors. Dry and
wet years were determined based on rainfall data and 7-year moving average. Finally, the
temporal trend of principal factors was depicted and water quality variations of wells and
qantas were compared. Believing that sodium and chlorine are the most important
parameters for water quality of wells and qanats, water quality of wells during dry years
is downgraded as the results show. In initial wet year period, water quality is extremely
improved but thereafter it is degraded. Results also show that water quality variation in
qanats is negligible.

کلیدواژه‌ها

Ground water quality؛ factor analysis؛ GIS؛ Kohpayeh-Segzi

مراجع

Aller L., Bennet T., Leher J., Petty R.,
Hackett G. 1987. DRASTIC: A
standardized system for evaluating
ground water pollution potential using
hydrogeological settings, Environmental
Protection Agency, EPA600/2-87-035;
pp 622.
Alizadeh A. 2008. Applied hydrology,
Razavi Ghods Astan Publications, pp
808. (In Persian).
Anbazhagan, S. and A. M. Nair. 2004.
Geographic information system and
groundwater quality mapping in Panvel
Basin, Maharashtra, India, Environmental
Geology, 45(6): 753-761.
Babiker, I. S., M. A. A. Mohamed, T.
Hiyama. 2007. Assessing groundwater
quality using GIS, Water Resource
Management, 21: 699–715.
Barber C., Bates L., Barron R., Allison H.
1993. Assessment of the relative
vulnerability of groundwater to pollution:
a review and background paper for the
conference workshop on vulnerability
assessment, J. Aust Geol Geophys, 14(2-
3): 1147–1154.
Ducci, D. 1997. GIS Techniques for
Mapping Groundwater Contamination
Risk, Natural Hazards, 20: 279–294,
1999.
Ghaiomian, J., H. Hosaini pour, A. R.
Ghasemi, H. R. Pairavan, 2005,
Application of multivariate analysis in
Hydro-geochemical assessment of
Sarchahan plain, Hormozgan, the 9th
conference of geology association, Iran.
(In Persian).
Hong, I. A. and H. T. Chon. 1999.
Assessment of groundwater
contamination using geographic
information systems, Environmental
Geochemistry and Health, 21(3): 273-
289.
Ledi Tjandra F., A. Kondhoh, M. Aslam
M.A. 2003. A conceptual database design
for hydrology using GIS, Proceedings of
Asia Pacific Association of Hydrology
and Water Resources, March: 13-15,
2003, Kyoto, Japan.
Masoudi M., Gh. R. Zehtabiyan, R.
Noruzi, M. Mahdavi and S. Behruz
Kuhenjani. 2009. Hazard assessment of
ground water resource degradation using
GIS in Mond Miyani basin, Iran, World
Applied Sciences Journal 6 (6): 802-807.
Robins NS., 2002. Groundwater quality in
Scotland: major ion chemistry of the key
groundwater bodies, Sci Tot Envir, 294:
41–56.
Rosen L., 1994. A study of the DRASTIC
methodology with emphasis on Swedish
conditions, Gr Water, 32(2): 278–285.
Sanchez-Martos F., R. Jiménez-Espinosa,
A. Pulido-Bosch. 2001. Mapping
groundwater quality variables using PCA
and geostatistics: a case study of Bajo
Andarax southeastern Spain.,
Hydrological Sciences-Journal-des
Sciences Hydrologiques, 46(2): April
2001.
Satyaji Rao Y.R., A. K. Keshari, A.K.
Gosain. 2010. Evaluation of regional
groundwater quality using PCA and
geostatistics in the urban coastal aquifer,
East Coast of India, International J. of
Environment and Waste Management,
Volume 5, Number 1-2, Pages: 163 –
180.
Skidmore, A.K., B. Witske, S. Karin, K.
Lalit Kumar. 1997. Use of remote
sensing and GIS for sustainable land
management. ITC J. 3(4): 302-315.