Assessment of water quality using GIS techniques and water quality index in reservoirs affected by water diversion

Oseke, Francis I.; Anornu, Geophrey K.; Adjei, Kwaku Amaning; Eduvie, Martin O.

doi:10.1016/j.wen.2020.12.002

Cited by 35 publications

(12 citation statements)

References 23 publications

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“…Trace metals significantly affect groundwater quality and affect human health if the level is higher than the acceptable limit (Bibi et al 2007;Oseke et al 2021). Nitrate and nitrite are the forms of nitrogen compounds usually present in groundwater.…”

Section: Resultsmentioning

confidence: 99%

Spatial mapping of groundwater quality in the municipality of Santa Ignacia, Tarlac, Philippines

2021

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The municipality of Santa Ignacia in the Province of Tarlac is highly dependent on groundwater as its major water supply for various purposes, but there is inconsistency in monitoring groundwater quality in the area which may impact the health of consumers. This study presented the preliminary assessment of groundwater quality through the application of spatial mapping. Out of 6,815 wells in the municipality, groundwater samples were collected from 274 hand pump wells. The measurements of selected groundwater quality parameters such as pH, conductivity, nitrate, nitrite, and iron of groundwater samples were determined on-site. The geographical coordinates of sampled wells and measurements of groundwater quality parameters were used in Geographic Information System software, QGIS, to construct the spatial distribution and spatial variation maps. The values of measured parameters were interpolated using the inverse distance weighted technique to predict the parameters at other sites in Santa Ignacia. Spatial variation maps revealed that the groundwater quality parameters varied in the municipality. All measured parameters, except the nitrite content, were within the acceptable limits set by the World Health Organization for drinking water. The high level of nitrite content in groundwater may be attributed to the application of fertilizers during agricultural activities. The nitrite content of groundwater, which exceeded the permissible limit, may cause long-term public health problems. Hence, an upscale evaluation and monitoring of groundwater quality and existing anthropological activities in the municipality are highly recommended. The identification of other possible source(s) of nitrite is necessary to lessen possible contamination risk and to protect the groundwater sources in the municipality. The results of this preliminary study would be useful in prospect studies of groundwater quality in the study area and in other provinces in the Philippines.

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Section: Resultsmentioning

confidence: 99%

Spatial mapping of groundwater quality in the municipality of Santa Ignacia, Tarlac, Philippines

2021

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“…7 shows the water quality index values calculated by the two proposed indices (WQI, CCME-WQI). Spatial maps of WQI values were prepared using the inverse distance weighting technique of ordinary Kriging method (Oseke et al 2021). The indices showed similar results, concerning the WQI and the CCME-WQI.…”

Section: Water Quality Indicesmentioning

confidence: 99%

Groundwater quality assessment using water quality indices and GIS technique with kriging interpolation in Maadher plain of Hodna, northern Algeria

Selmane

Dougha

Djerbouai

et al. 2022

Preprint

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In a semi-arid region of Maadher, central Hodna (Algeria), groundwater is the main source for agricultural and domestic purposes. The quality of groundwater is strongly influenced by surrounding anthropogenic activities under the effect of climate change. The objective of this study was to assess the quality of groundwater and its suitability for use in irrigation and drinking using quality indices and to identify polluted wells using geographic information system (GIS) by the spatial interpolation method of Kriging. The results showed that all water samples contained high levels of calcium, chlorine and sulfate, as well as alarming concentrations of nitrate ions that exceed WHO standards. Piper's diagram indicated that the groundwater hydrochemical facies is a sulfate-chloride-nitrate-calcium combination (SO₄2−-Cl−-NO₃⁻- Ca2+ water type). According to the water quality indices, the classifications of WQIs are similar, the majority of samples are in the poor water category and just over 10% of all samples are in the very poor water category, and less than 10% of the samples represent the good to excellent quality category. Irrigation water indices indicate that all samples are acceptable. Water quality maps generated using ordinary Kriging method show that high concentrations of salinization parameters (Ca2+, Na+, Mg2+, SO₄2− and Cl−) were found north of the Maadher zone and decrease as we move south; except for bicarbonate and nitrate which were high in the center of the zone, near the Wadi Bousaada depression. The study revealed that groundwater quality has been affected by anthropogenic activities represented by excessive agricultural practices and inflows from Wadi Bousaada. The groundwater saturation index was calculated to know the origin of the mineralization and the chemical processes that occur in the aquifer.

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“…The IDW has long used a deterministic model approach in which undetermined values are computed, based on the proximity of the points rather than the distant values. This interpolation method has been widely utilized in the field of spatial analysis to explain the distribution of pollutants and physicochemical determining patterns in time and space (Kanagaraj & Elango, 2016;Oseke et al, 2021).…”

Section: Water Analysis Gis Analysismentioning

confidence: 99%

Evaluation of heavy metals contents and the possible risk in the surface water and fish of Lake Qarun, Egypt

Salaah¹,

Zanaty²,

El-Naggar³

2022

Egypt. J. of Aquatic Biolo. and Fish.

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Assessment of water quality using GIS techniques and water quality index in reservoirs affected by water diversion

Cited by 35 publications

References 23 publications

Spatial mapping of groundwater quality in the municipality of Santa Ignacia, Tarlac, Philippines

Spatial mapping of groundwater quality in the municipality of Santa Ignacia, Tarlac, Philippines

Groundwater quality assessment using water quality indices and GIS technique with kriging interpolation in Maadher plain of Hodna, northern Algeria

Evaluation of heavy metals contents and the possible risk in the surface water and fish of Lake Qarun, Egypt

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