Spatial Distribution Analysis and Mapping of Groundwater Quality Parameters for the Sylhet City Corporation (SCC) Area Using GIS
Gulam Md Munna,
Numan-Al-Kibriya,
Ahmad Hasan Nury,
Shriful Islam,
Hasina Rahman
Issue:
Volume 3, Issue 1, January 2015
Pages:
1-10
Received:
3 February 2015
Accepted:
21 February 2015
Published:
2 March 2015
Abstract: As Groundwater is a natural source of drinking water, it needs to be monitored regularly and people should be made aware of its quality. The unscientific management and exploration of groundwater resources has always been a serious problem in many cities in Bangladesh. As a result the quality of groundwater has become equally important as of its quantity. The present study is aimed to assess the current condition of groundwater quality and to analyze the spatial distribution of groundwater quality for the Sylhet City Corporation (SCC) area. The groundwater quality parameters were analyzed for 51 samples collected from the existing shallow tube wells from the twelve wards of SCC area. Arc GIS geostatistical analyst extension module was used for exploratory data analysis, semivariogram model selection, cross validation. Experimental semivariogram values are examined to find out the best fitted ordinary kriging (OK) models for eleven water quality parameters: pH, potassium, total hardness, alkalinity, turbidity, calcium, total dissolve solids, sulfate, nitrate, chloride and iron. The values of prediction errors i.e. mean square error (MSE), root mean square error (RMSE), average standard error (ASE), root mean square standardize error (RMSSE) were considered to justify the best fitted model. The interpolated spatial maps of different groundwater parameters shows that iron, alkalinity, total hardness and turbidity are vulnerable to groundwater quality within the study area.
Abstract: As Groundwater is a natural source of drinking water, it needs to be monitored regularly and people should be made aware of its quality. The unscientific management and exploration of groundwater resources has always been a serious problem in many cities in Bangladesh. As a result the quality of groundwater has become equally important as of its qu...
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ARC. GIS Based Interpretation of Ground Water Pollution: A Case Study of Coastal Area District Badin, Sindh, Pakistan
Mohammad Amin Qureshi,
Ghulam Murtaza Mastoi,
Abdul Aziz Mastoi,
Muhammad Ali Bhatti,
Ali Muhammad Rind,
Saima Chandio,
Abdul Waheed Mastoi
Issue:
Volume 3, Issue 1, January 2015
Pages:
11-21
Received:
3 April 2015
Accepted:
13 April 2015
Published:
24 April 2015
Abstract: The border line of Arabian Sea, near district Badin, Sindh, Pakistan was selected as a case study for the investigation of heavy metal concentration in ground water. Ground water is used for human consumption as well as agricultural purposes due to shortage of fresh water in the area. Badin Coastal area is poverty stricken, socio-economically backward, politically ignored, frequently affected and hit by natural disasters. Area is known by stormy cyclones, monsoon heavy rains, floods, tidal sea water intrusion and sea erosion. Study area has not been highlighted properly yet. Highly polluted waste water of Mega project Left Bank Outfall Drain (LBOD) which carries complexes of pollutants of agriculture run off, industrial and municipal effluents of different districts, are being disposed into Arabian Sea, passing through coastal areas of district Badin, contaminating lakes, lagoons, ground water and soils. Tidal sea water of Arabian Sea also pollutes ground water through seepage. The attempts were made to understand the effects on ground drinking water and results were interpreted by Arc GIS maps, to meet the current trends of research. The objective was to investigate ground water pollution extent in the area due to drains and tidal sea water. Sixteen (16) samples of ground water were collected from different villages near coastal area. The average data of various parameters of ground water near coastal were: pH 7.40 ± 0.3758, E.C(ms/cm) 7.45±6.8166, TDS(mg/L) 4044±3876.8, Cu 0.1821±0.486, Zn 0.1399±0.205,Co (mg/L) 0.0900±0.094, Cd(mg/L) 0.0244±0.010, Fe(mg/L) 0.3260±0.591,Ni(mg/L) 0.0055±0.012, Pb(µg/L) 0.1312±0.144. The evaluated results indicated that Left Bank Outfall Drain and sea water intrusion are major contributor for ground water pollution and ground water was found to be unfit for drinking purposes.
Abstract: The border line of Arabian Sea, near district Badin, Sindh, Pakistan was selected as a case study for the investigation of heavy metal concentration in ground water. Ground water is used for human consumption as well as agricultural purposes due to shortage of fresh water in the area. Badin Coastal area is poverty stricken, socio-economically backw...
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