Assessment of groundwater vulnerability in the Río Artiguas basin, Nicaragua

Mendoza, Alfredo; Barmen, Gerhard

doi:10.1007/s00254-006-0233-1

Cited by 60 publications

(31 citation statements)

References 20 publications

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“…It used the original seven parameters ( 25 ) (depth to groundwater ( D ), net recharge ( R ), aquifer media ( A ), soil media ( S ), topography ( T ), influence of the vadose zone ( I ), hydraulic conductivity ( C )) plus an additional parameter for the degree of fracturing ( M ), which may facilitate the transport of contaminants. Maps connected to each parameter were overlaid to produce a vulnerability map as described by Aller et al (1987) ( 25 ) and Mendoza and Barmen (2006): ( 24 ) where subscript R is the rating, and the coefficient of each term in the equation is the weight assigned to every parameter. The resulting map with numerical values was normalized and classified as high, moderate (medium), and low vulnerability.…”

Section: Methodsmentioning

confidence: 99%

Ecological, Groundwater, and Human Health Risk Assessment in a Mining Region of Nicaragua

et al. 2010

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The objective of the present study was to integrate the relative risk from mercury exposure to stream biota, groundwater, and humans in the Río Artiguas (Sucio) river basin, Nicaragua, where local gold mining occurs. A hazard quotient was used as a common exchange rate in probabilistic estimations of exposure and effects by means of Monte Carlo simulations. The endpoint for stream organisms was the lethal no-observed-effect concentration (NOECs), for groundwater the WHO guideline and the inhibitory Hg concentrations in bacteria (IC), and for humans the tolerable daily intake (TDI) and the benchmark dose level with an uncertainty factor of 10 (BMDLs(0.1)). Macroinvertebrates and fish in the contaminated river are faced with a higher risk to suffer from exposure to Hg than humans eating contaminated fish and bacteria living in the groundwater. The river sediment is the most hazardous source for the macroinvertebrates, and macroinvertebrates make up the highest risk for fish. The distribution of body concentrations of Hg in fish in the mining areas of the basin may exceed the distribution of endpoint values with close to 100% probability. Similarly, the Hg concentration in cord blood of humans feeding on fish from the river was predicted to exceed the BMDLs(0.1) with about 10% probability. Most of the risk to the groundwater quality is confined to the vicinity of the gold refining plants and along the river, with a probability of about 20% to exceed the guideline value.

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Section: Methodsmentioning

confidence: 99%

Ecological, Groundwater, and Human Health Risk Assessment in a Mining Region of Nicaragua

et al. 2010

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“…Global examples of its application include Boughriba et al (2010), Denny et al (2007), Mendoza and Barmen (2006) and Baalousha (2006). The method is relatively simple in concept and is particularly popular for its ease of use and strong compatibility with GIS mapping techniques (e.g,.…”

Section: Methodology For Aquifer Vulnerability Assessmentmentioning

confidence: 99%

Assessment of groundwater vulnerability in the Yinchuan Plain, Northwest China using OREADIC

Qian

Howard

et al. 2011

Environ Monit Assess

118

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Groundwater vulnerability assessments provide a measure of the sensitivity of groundwater quality to an imposed contaminant load and are globally recognized as an essential element of all aquifer management and protection plans. In this paper, the vulnerability of groundwaters underlying the Yinchuan Plain of Northwest China is determined using OREADIC, a GIS-based assessment tool that incorporates the key characteristics of the universally popular DRASTIC approach to vulnerability assessment but has been modified to consider important additional hydrogeological factors that are specific to the region. The results show that areas of high vulnerability are distributed mainly around Qingtongxia City, Wuzhong City, Lingwu City, and Yongning County and are associated with high rates of aquifer recharge, shallow depths to the water table, and highly permeable aquifer materials. The presence of elevated NO (3) (-) in the high vulnerability areas endorses the OREADIC approach. The vulnerability maps developed in this study have become valuable tools for environmental planning in the region and will be used for predictive management of the groundwater resource.

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“…1987), SINTACS (강진희와 박은규, 2010;Civita, 1994;Edet, 2004;Al-Amoush et al, 2010), GOD (Foster, 1987;Mendoza and Barmen, 2006) Backman et al, 1998;Rapant et al, 1999;Vasanthavigar et al, 2010 …”

Section: 서 론mentioning

confidence: 99%

Quantification and Evaluation of Groundwater Quality Grade by Using Statistical Approaches

Yoon¹,

Bae²,

Lee³

2012

Journal of Soil and Groundwater Environment

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This study suggests a method to grade groundwater quality quantitatively using statistical approaches for evaluating the quality of groundwater in wells included in the Groundwater Quality Monitoring Network (GQMN). The proposed analysis method is applied to GQMN data from 2001 to 2008 for nitrate nitrogen, chloride, trichloroethylene, potential of hydrogen (pH), and electrical conductivity. The analysis results are obtained as groundwater quality grades of the groundwater representing each of the monitoring stations. The degree of groundwater contamination is analysed for water quality parameters, district, and usage. The results show that the degree of groundwater contamination is relatively high by nitrate nitrogen, bacteria and electrical conductivity and at Seoul, Incheon, Gwangju, Gyeonggido and Jeollado. The degree of contamination by nitrate nitrogen and trichloroethylene is especially high when the groundwater is used for agricultural and industrial water, respectively. It is evaluated that potable groudnwater in GQMN is significantly vulnerable to nitrate nitrogen and bacteria contamination.

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Assessment of groundwater vulnerability in the Río Artiguas basin, Nicaragua

Cited by 60 publications

References 20 publications

Ecological, Groundwater, and Human Health Risk Assessment in a Mining Region of Nicaragua

Ecological, Groundwater, and Human Health Risk Assessment in a Mining Region of Nicaragua

Assessment of groundwater vulnerability in the Yinchuan Plain, Northwest China using OREADIC

Quantification and Evaluation of Groundwater Quality Grade by Using Statistical Approaches

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