List of Articles GWQI

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Physicochemical Pollution of Water Wells in the Villages around Damavand by Using the Geographic Information System
  Mohadeseh Hadadi Maryam Rafati Mojtaba Sayyadi
  10.30495/jest.2022.54092.5117
  Background and Objective: Considering the water shortage and drought crisis in recent years, the importance of examining the quality of groundwater resources has become more important day by day, and in this regard, the Geographic Information System (GIS) is one of the More

  Background and Objective: Considering the water shortage and drought crisis in recent years, the importance of examining the quality of groundwater resources has become more important day by day, and in this regard, the Geographic Information System (GIS) is one of the best methods to help managers for optimization their decisions. Therefore, the purpose of this research was to investigate the pollution and qualitative changes in water well in villages around Damavand city by using GIS. Material and Methodology:  Eleven water wells were sampled in the villages of Masha, Chenar Sharghi, Luman, Wadan, Zan, Ayneh Varzan, Jaban, Sarbandan, Aro, Seyedabad, and Islamabad during wet and drought periods. Then, using IDW interpolation methods, the water well information, which is in the form of points, was generalized to the surface and map was prepared. Findings: The results showed that the water in the wells of the studied area is good for drinking and agriculture purposes. According to GIS maps, the most polluted well is located in the village of Vadan, where EC and sodium levels are above the standard level due to the geological structure of the south of the city and the improper water abstraction of this well. In terms of the GWQI index, it was found that the villages of Aynevarzan, Zan and Seyedabad in both periods of study, due to having a quality number of less than 20, are more suitable than other areas for drilling wells in the future. Discussion and Conclusion: Since Damavand has a lot of agricultural and orchards lands that are sprayed periodically and the use of chemical fertilizers are high, it is possible that in the future, the condition of these wells will exceed the standard threshold. However, based on the results of this study at the sampling time, the condition of these wells was suitable. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Assessment of Groundwater Quality Index (GWQI) and its Geostatistical Analysis in Lordegan Plain Aquifer
  Yaser Ostovari MOHAMMAD RAVANB Alireza Davoudian
  10.22034/jest.2017.11271
  Background and Objective: Groundwater quality index is an important tool for determination of drinking water quality. The objective of this study was to assess and map groundwater quality index in Lordegan aquifer. Method: In this study, 32 agricultural wells were sampl More

  Background and Objective: Groundwater quality index is an important tool for determination of drinking water quality. The objective of this study was to assess and map groundwater quality index in Lordegan aquifer. Method: In this study, 32 agricultural wells were sampled for 4 times in 2010. pH, electrical conductivity, turbidity, total suspended and dissolved solids, total hardness, nitrate, sulfate, chloride, calcium, magnesium, sodium and potassium were measured in each sample.  Using the measured values, groundwater quality index was calculated for each sample. Findings: Groundwater quality index varied between 44 and 74, indicating the suitable and moderate quality of water for drinking purpose.  Spatial pattern of groundwater quality index was best described by the Gaussian variogram and ordinary kriging was used for mapping the groundwater quality index.  Based on the groundwater quality index map, the larger part of the aquifer located in the northern side had a moderate quality and the smaller part located in the southern side had a suitable quality. Turbidity and electrical conductivity had the greatest impact on groundwater quality index.   Groundwater quality index was also lightly sensitive to these two parameters. Conclusion: Further studies are needed to determine the suitability of groundwater quality index in Lordegan aquifer and to calibrate groundwater quality index classification in aquifers such as Lordegan. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Comparative survey on Physico-Chemical parameters of underground waters in Malard county villages with the use of GWQI index and studying the trend of their changes in GIS system
  Parisa Mahmoodpour Moteshakker Amirhesam Hasani Ali Torabian Reza poorrajab
  Factors such as atmospheric precipitation reduction, inefficient agricultural methods, the threat of water resources from pollutants, etc. have all resulted in water supply issue confronting two challenges of quality and quantity in relation with aquifers. Similarly, in More

  Factors such as atmospheric precipitation reduction, inefficient agricultural methods, the threat of water resources from pollutants, etc. have all resulted in water supply issue confronting two challenges of quality and quantity in relation with aquifers. Similarly, in Malard county, underground water aquifers are the primary source of water supply. The information of physiochemical parameters of water samples of  9 water wells in Malard County during two drought and wet periods in the year 1396 have been collected. The objective of this study is the qualitative modeling of underground water and the calculation of GWQI index in the GIS system, and comparison. The findings showed that the quality of underground water from east to west, and from northeast to southwest confronts increment in physicochemical parameters because of the situation of the wells' depth, underground water scarcity, the decrease of earth self-purification, and bedrock lift as geological and hydrological factors as well as human factors entering the aquifers. This issue is more serious in Dehak Qeshlaq and Sharifabad counties. Considering the appropriate self-purification condition in Khoshnam County, this area can be introduced as a safe region. Moreover, a meaningful relation has been obtained between the outcomes resulted from GIS and GWQI. Manuscript profile