Evaluation of Gotvand Dam Construction Impacts on Time Series variability of water quality parameters

Document Type : Technical Note (5 pages)

Authors

1 Ph.D student of Water Resources, Sciences and Water Engineering Department, University of Birjand, Birjand, Iran

2 Associate Professor of Sciences and Water Engineering Department, University of Birjand, Birjand, Iran.

Abstract

In this study, the trend of water quality variables of Sosan and Gotvand hydrometer stations were estimated to evaluation the effectives of Gotvand's dam on Karoon River. The water quality variables are TDS, EC, pH and SAR in period of 1998 to 2012. The results of modified Mann-Kendall test for Sosan station showed that the TDS variable was seen the increasing and decreasing trend in monthly scale. Between all months, the August has the most significant increasing trend in TDS variable and with attention to the calculated the Sen slope, this variable was increased about 180.32 (mg/l) in resent 16 years. In annual scale, also the trend of TDS was calculated as non-significant increasing. Also the trend of EC variable in Sosan station was same as TDS and has a non-significant increasing trend in most of months. In annual scale also was seen the increasing trend in EC variable. GThe results of modified Mann-Kendall test for Gotvand station showed the decreasing trend in the water quality of Karon River after the Gotvand's dam. TDS variable has a increasing and decreasing trend in Gotvand station in monthly scale. EC variable in Gotvand station in all of months has a increasing trend. The results of evaluation the time of changing trend showed that the most significant failure occurred in year 2007. The results of chemical analysis of water quality in the Karun River gauging stations showed that from 2001 to 21013 the values of EC were increased about 160 percent.

Keywords

Main Subjects

References

 

Anbazhagan S, Nair A M (2004) Geographic information system and groundwater quality mapping in Panvel Basin, Maharashtra, India. Environmental Geology 45(6):753-761
Hassanvand M (2010) Gotvand’s dam water pollution assessment due to the geological conditions of the dam reservoir. Thesis Master of Geology, Faculty of Earth Sciences, Shahroud University of Technology (in Persian)
Kumar S, Merwade V, Kam J, Thurner K (2009) Streamflow trends in Indiana: Effects of long term persistence, precipitation and subsurface drains. Journal of Hydrology 374(1-2):171-183
Madadinia M, Monavari S M, Karbasi A, Nabavi S M, Rajabzadeh I (2014) Evaluation the Karoon water quality in Ahwaz reach using water quality indexes. Environmental science and technology 16(1):49-60 (In Persian)
Nakhaei M, Mosaei F, Ramazani A, Amiri V (2011) Assessment quality of Karoon River and its branches in Chaharmahal and Bakhtiari Province. Iranian Journal of Geology 5(20):59-72 (In Persian)
Pettitt AN (1979) A non-parametric approach to the change-point problem. Applied statistics 126-135
SolaimaniSardo M, Vali A A, Ghazavi R, Saidi Goraghani H R (2013) Trend Analysis of Chemical Water Quality Parameters; Case study Cham Anjir River. Journal of Irrigation & Water Engineering 3(12):95-106 (In Persian)
 
 
Iran-Water Resources Research
Volume 13, Issue 3
December 2017
Pages 175-180

Files

History

  • Receive Date: 19 October 2016
  • Revise Date: 08 January 2017
  • Accept Date: 09 January 2017

Share

How to cite

Statistics