Groundwater Vulnerability Assessment with DRASTIC Index Method in the Salinity-Affected Southwest Coastal Region of Bangladesh: A Case Study in Bagerhat Sadar, Fakirhat and Rampal

Nahin, Khadiza Tul Kobra; Basak, Rony; Alam, Rafiul

doi:10.1007/s41748-019-00144-7

Cited by 40 publications

(16 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Due to the adverse impact of climate change, Bangladesh suffers from a significant drinking water scarcity, which is worsening day by day at present (Islam et al, 2019;Nahin et al, 2020). Forecasts from previous studies suggest that, along with other developing countries, Bangladesh is likely to experience substantial water stress by the year 2025 (Chowdhury, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…However, significant arsenic contamination in groundwater is forcing people to collect drinking water from shallow tube wells instead (Karim & Safiuddin, 2003). Furthermore, salinity in groundwater in the southwestern region is reducing people's access to healthy and safe drinking water (Nahin et al, 2020). Presently, Bangladeshi urban areas are encountering significant in-migration from rural areas, which creates enormous challenges for urban lifelines, especially as the pressure of additional urban immigrants makes the water supply crisis more complex.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Willingness to pay for improved safe drinking water in a coastal urban area in Bangladesh

et al. 2021

View full text Add to dashboard Cite

Discontentment with a piped supply system of drinking water has become a significant concern in Bangladesh's urban areas in recent years, necessitating the improvement of different aspects of the system in question. Therefore, by conducting a discrete choice experiment on 115 households out of a systematically selected 161 households, this study aims to estimate the willingness to pay (WTP) for an improved safe drinking water supply by considering the trade-offs made by urban dwellers for the proposed improvements to an existing water supply system in the Khulna City Corporation (KCC) area of Bangladesh. The primary results show that the total WTP of households is estimated at BDT 243.6 (≈US$ 2.87) per month, implying that respondents are ready to pay for improvements to the water supply attributes of water quality, regularity of supply, water pressure in taps, and filtering. A revenue stream for an improved water supply system is also being developed, suggesting that investment in improving the system would be a ‘no-regret’ decision and economically sustainable.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Willingness to pay for improved safe drinking water in a coastal urban area in Bangladesh

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Net recharge is determined by rainfall, surface water, soil and aquifer properties and topography [10]. These factors should all be considered in determining groundwater vulnerability, since, with recharge water, pollutants enter the subsurface water bodies and can travel laterally within the aquifer or vertically to the water table [11], rendering higher risks to higher recharge rates [10].The SGW table plays an important role in groundwaterdependent ecosystems [12], and has an effect on surface vegetation and yield of agricultural crops [13,14]. Consequently, a decline in the water table can reduce well yield and increase pumping costs, having serious economic impact on areas where groundwater is used as the major source of irrigation [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A New Approach in Determining the Decadal Common Trends in the Groundwater Table of the Watershed of Lake “Neusiedlersee”

Magyar

Hatvani

Arató

et al. 2021

Water

View full text Add to dashboard Cite

Shallow groundwater is one of the primary sources of fresh water, providing river base-flow and root-zone soil water between precipitation events. However, with urbanization and the increase in demand for water for irrigation, shallow groundwater bodies are being endangered. In the present study, 101 hydrographs of shallow groundwater monitoring wells from the watershed of the westernmost brackish lake in Europe were examined for the years 1997–2012 using a combination of dynamic factor and cluster analyses. The aims were (i) the determination of the main driving factors of the water table, (ii) the determination of the spatial distribution and importance of these factors, and (iii) the estimation of shallow groundwater levels using the obtained model. Results indicate that the dynamic factor models were capable of accurately estimating the hydrographs (avg. mean squared error = 0.29 for standardized water levels), meaning that the two driving factors identified (evapotranspiration and precipitation) describe most of the variances of the fluctuations in water level. Both meteorological parameters correlated with an obtained dynamic factor (r = −0.41 for evapotranspiration & r = 0.76 for precipitation). The strength of these effects displayed a spatial pattern, as did the factor loadings. On this basis, the monitoring wells could be objectively distinguished into two groups using hierarchical cluster analysis and verified by linear discriminant analysis in 98% of the cases. This grouping in turn was determined to be primarily related to the elevation and the geology of the area. It can be concluded that the application of the data analysis toolset suggested herein permits a more efficient, objective, and reproducible delineation of the primary driving factors of the shallow groundwater table in the area. Additionally, it represents an effective toolset for the forecasting of water table variations, a quality which, in the view of the likelihood of further climate change to come, is a distinctive advantage. The knowledge of these factors is crucial to a better understanding of the hydrogeological processes that characterize the water table and, thus, to developing a proper water resource management strategy for the area.

show abstract

“…The studied area is located on the side of the youngest structural division in the western Indo-Burman Range of the folded flank (Kresic, 2006;Nahin, Basak, Alam, & Environment, 2019). The elevation of this area is very low from the other areas of Bangladesh.…”

Section: Geological Settingmentioning

confidence: 99%

“…6). On the basis of Walton's classification (Nahin et al, 2019;Walton, 1962) of well loss coefficient and the values between the coefficient and conditions of wells, the two wells have tested for this investigation area that is properly developed and designed. However, the percentages of formation loss have found on average 98.95% (Well No.…”

Section: Calculation Of Well Loss and Aquifer Loss Coefficientmentioning

confidence: 99%

Hydrostratigraphic Characterization in South-Eastern Coastal Aquifer of Bangladesh using Lithological Data and Step-drawdown Test

View full text Add to dashboard Cite

The hydrogeological investigation of south-eastern coastal aquifer of Bangladesh has been performed for the evaluation of well performance in the aquifer based on well logs and step-drawdown tests. The consequences from four single-well of stepdrawdown tests have conductd in two recent boreholes through Jacob and Rorabaugh's methods. From lithological data analysis it is observed that the aquifer of studied area is in Early Miocene age which consists of Upper and Middle Boka Bil formation. The values of step-drawdown test results have indicated well losses ranges between 17% and 19.8% and loss of aquifer on two well ranges between 82.6 % and 80.2% which reflected higher efficiencies of two wells. The values of specific capacity have varied from two wells in totally 18.13 m3/day/m to 23.79 m3/day/m, respectively whereas the values of well efficiency varied from 95.3% to 98.5% which indicate that the wells are properly developed and designed. The estimation of aquifer transmissivity ranges from 271.24 (m2/day) to 263.3 (m2/day) and these values have evaluated the wells indicating the higher production with its water accessibility from the wells. Therefore, it is indicated the laminar flow of the aquifer/well-face (negligible part of turbulent flow). As a result, the water-bearing zone is effective for high amount of water production per day. The total approaches of litholog and pumping tests determine the effective application of the single-well on step-drawdown tests and it has identified the safe and sustainable well growth for the extraction of groundwater in future.

show abstract

Groundwater Vulnerability Assessment with DRASTIC Index Method in the Salinity-Affected Southwest Coastal Region of Bangladesh: A Case Study in Bagerhat Sadar, Fakirhat and Rampal

Cited by 40 publications

References 8 publications

Willingness to pay for improved safe drinking water in a coastal urban area in Bangladesh

Willingness to pay for improved safe drinking water in a coastal urban area in Bangladesh

A New Approach in Determining the Decadal Common Trends in the Groundwater Table of the Watershed of Lake “Neusiedlersee”

Hydrostratigraphic Characterization in South-Eastern Coastal Aquifer of Bangladesh using Lithological Data and Step-drawdown Test

Contact Info

Product

Resources

About