scholarly journals Kriging method of study of the groundwater quality used for irrigation - case of Wadi Djendjen plain (North-East Algeria)

2016 ◽  
Vol 8 (2) ◽  
pp. 346 ◽  
Author(s):  
A Boufekane ◽  
O Saighi
Keyword(s):  
Groundwater Quality ◽  
Kriging Method ◽  
North East

Groundwater Quality Assessment Using Geospatial Techniques and WQI in North East of Adama Town, Oromia Region, Ethiopia

2020 ◽  
Vol 3 (1) ◽  
pp. 22-36 ◽  
Author(s):  
Shankar Karuppannan ◽  
Nafyad Serre Kawo
Keyword(s):  
Groundwater Quality ◽  
Sustainable Use ◽  
World Health ◽  
Geospatial Techniques ◽  
Distribution Maps ◽  
North East ◽  
Drinking And Irrigation ◽  
Groundwater Samples ◽  
Arc Gis ◽  
Health Organization

Assessment of groundwater quality is vital for the sustainable use of the resources for domestic and agricultural purposes. In this study spatial variation of physicochemical parameters were analyzed for Northeast Adama Town. Water Quality Index (WQI) and irrigation indices were used to determine the suitability of groundwater for drinking and irrigation purposes, respectively. Further, the physical-chemical results were compared with the Ethiopian standards and the World Health Organization (WHO) standards for drinking and public health. Using GIS interpolation methods in Arc GIS 10.3.1, spatial distribution maps of pH, TDS, EC, Cl−, HCO32−, SO42−, Ca2+, Mg2+, Na+ and K+, RSC, SAR, Na% were prepared. Results indicated that except ASTU well 2, all samples are below the desirable limits of WHO. The WQI results indicated that 85% of samples and 15% of samples were in good and poor categories, respectively. Irrigation indices show that the most groundwater samples have excellent water classes, indicating that they are suitable for irrigation purposes.

scholarly journals Review of the Kriging Technique Applications to Groundwater Quality

2021 ◽  
Vol 27 (12) ◽  
pp. 23-32
Author(s):  
Hayat Azawi ◽  
May Samir Saleh
Keyword(s):  
Groundwater Quality ◽  
Quality Indicator ◽  
Ordinary Kriging ◽  
Indicator Kriging ◽  
Disjunctive Kriging ◽  
Kriging Method ◽  
Lognormal Kriging ◽  
Groundwater Contaminants ◽  
Simple Kriging

Kriging, a geostatistical technique, has been used for many years to evaluate groundwater quality. The best estimation data for unsampled points were determined by using this method depending on measured variables for an area. The groundwater contaminants assessment worldwide was found through many kriging methods. The present paper shows a review of the most known methods of kriging that were used in estimating and mapping the groundwater quality. Indicator kriging, simple kriging, cokriging, ordinary kriging, disjunctive kriging and lognormal kriging are the most used techniques. In addition, the concept of the disjunctive kriging method was explained in this work to be easily understood.

scholarly journals Assessment Of The Protective Capacity Of Vadoze Zone Over Aquifer Systems Using Secondary Geoelectrical Parameters: A Case Study Of Kaltungo Area North East, Nigeria

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
E.Y. Mbiimbe ◽  
I.B. Goni ◽  
J.M. El-Nafaty ◽  
A.U. Yuguda
Keyword(s):  
Groundwater Quality ◽  
Vadose Zone ◽  
Computer Software ◽  
Mean Value ◽  
Primary Data ◽  
Protective Capacity ◽  
North East ◽  
Transverse Resistance ◽  
Aquifer Systems ◽  
Vadoze Zone

An assessment of the protective capacity of the vadose zone overlying the aquifer systems in the Kaltungo area was carried out to determine its influence on groundwater quality. Applying the schlumberger array with a maximum electrode spread AB/2 = 100m through VES, thirty water well points were surveyed using  Omega terrameter (PIOSO1) resistivity meter. The field data was first subjected to manual interpretation through curve marching and then digitized modeled curves using computer software. The interpreted data revealed that the area is characterized by eleven different curve types representing three to five geo electrical layers. In order to assess the protective capacity of the vadoze zone over the aquifer systems, the longitudinal conductance (S) and transverse resistance (T) (secondary geoelectric parameters) were computed from the primary data using the Dar Zarouk formula. The values of S obtained range from 0.0018 to 0.4056 ohms with a mean value of 0.0135 ohms while the values of T range from 0.55 ohms to 1195.68 ohms with a mean value of 39.84 ohms. The values of S and T obtained reveal that 90% of probed points has poor protective capacity, 10 % has moderate protective capacity and 83 % has high transmissivity, 17 % has intermediate transmissivity. The T and S values are skewed towards poorly protective capacity thus making groundwater in the area highly vulnerable to contamination from the surface. To achieve good groundwater quality in the area, proper completion of newly constructed wells should install protective casing through the entire vadose zone.

scholarly journals Hydrogeochemistry of the Paravanar River Sub-Basin, Cuddalore District, Tamilnadu, India

2011 ◽  
Vol 8 (2) ◽  
pp. 835-845 ◽  
Author(s):  
K. Shankar ◽  
S. Aravindan ◽  
S. Rajendran
Keyword(s):  
Groundwater Quality ◽  
Ion Concentration ◽  
Quality Data ◽  
Gis Mapping ◽  
Mapping Technique ◽  
Thematic Maps ◽  
Hydrogen Ion Concentration ◽  
North East ◽  
South Central ◽  
Mixed Field

To assess the groundwater quality of the Paravanar river basin, groundwater data were collected by conventional methods. Hydrogeochemical facies of groundwater of study area reveals fresh to brackish and alkaline in nature. Piper plot shows that most of the groundwater samples fall in the mixed field of Ca-Mg-Cl type. Using GIS mapping technique, major element concentration of groundwater has been interpolated and studied. Groundwater thematic maps on electrical conductivity (EC), hydrogen ion concentration, bicarbonates, chlorides and nitrates were prepared from the groundwater quality data. Different classes in thematic maps were categorized as i) good, ii) moderate and iii) poor with respect to groundwater quality. Northeast and southeast parts of the study area represent the doubtful water class regarding the concentration of EC to represent connate nature of water adjacent to the coast. NNE (North-North-East) and southern parts of the study area have pH ranging from 7 to 8 indicating acidic nature as they were from the weathered Cuddalore sandstone. As northern part of the study area is irrigated, fertilizer used for agriculture may be the source for increase in concentration of nitrates. Chloride clusters in the south central part of the study area from coast up to NLC mines and reveals the chloridization of aquifer in 48 years either due to upwelling of connate water from the deeper aquifer as a result of depressurization of Neyveli aquifer for the safe mining of lignite.

scholarly journals Assessment of groundwater quality using geographical information system (GIS), at north-east Cairo, Egypt

2015 ◽  
Vol 14 (2) ◽  
pp. 325-339
Author(s):  
M. F. El-Shahat ◽  
M. A. Sadek ◽  
W. M. Mostafa ◽  
K. H. Hagagg
Keyword(s):  
Information System ◽  
Groundwater Quality ◽  
Geographical Information System ◽  
Groundwater Resources ◽  
Geographical Information ◽  
Quaternary Aquifer ◽  
North East ◽  
The North ◽  
Groundwater Samples ◽  
Almost All

The present investigation has been conducted to delineate the hydrogeochemical and environmental factors that control the water quality of the groundwater resources in the north-east of Cairo. A complementary approach based on hydrogeochemistry and a geographical information system (GIS) based protectability index has been employed for conducting this work. The results from the chemical analysis revealed that the groundwater of the Quaternary aquifer is less saline than that of the Miocene aquifer and the main factors that control the groundwater salinity in the studied area are primarily related to the genesis of the original recharging water modified after by leaching, dissolution, cation exchange, and fertilizer leachate. The computed groundwater quality index (WQI) falls into two categories: fair for almost all the Miocene groundwater samples, while the Quaternary groundwater samples are all have a good quality. The retarded flow and non-replenishment of the Miocene aquifer compared to the renewable active recharge of the Quaternary aquifer can explain this variation of WQI. The index and overlay approach exemplified by the DUPIT index has been used to investigate the protectability of the study aquifers against diffuse pollutants. Three categories (highly protectable less vulnerable, moderately protectable moderately vulnerable and less protectable highly vulnerable) have been determined and areally mapped.

Assessment of groundwater quality in the Seraidi region (north-east of Algeria) using NSF-WQI

2016 ◽  
Vol 16 (4) ◽  
pp. 1132-1137 ◽  
Author(s):  
Nawel Benouara ◽  
Abdelaziz Laraba ◽  
Lamia Hachemi Rachedi
Keyword(s):  
Water Resources ◽  
Groundwater Quality ◽  
Fecal Coliforms ◽  
Critical Element ◽  
Chemical Parameters ◽  
Political Issues ◽  
North East ◽  
The North ◽  
Physico Chemical ◽  
Groundwater Samples

Scarcity of water, pollution load, political issues and rising population have drawn great attention for proper management of water resources such as groundwater in the 21st century. The evaluation of groundwater quality is a critical element in the assessment of water resources. The quality/potability of water that is consumed defines the baseline of protection against many diseases and infections. The present study aims to calculate the water quality index (WQI) by the analysis of seven physico-chemical parameters according to the National Sanitation Foundation (NSF) to assess the suitability of water for drinking, irrigation purposes and other human uses. In the present investigation, ten groundwater samples were collected from various parts of Seraidi municipality area located in the north-east of Algeria, Physico-chemical parameters such as pH, temperature, dissolved oxygen, phosphates, nitrates, turbidity and fecal coliforms were analyzed. The overall WQI values for all the samples were found to be in the range of 68–86, which reveals the fact that the quality of all the samples is only medium to good and could be used for drinking and other domestic uses only after proper treatment.

scholarly journals Assessment of groundwater quality and determination of hydrochemical evolution of groundwater in Shillong, Meghalaya (India)

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Chakresh K. Jain ◽  
Sanjay K. Sharma ◽  
Surya Singh
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Atmospheric Precipitation ◽  
Surface Water Quality ◽  
Capital City ◽  
Eastern Region ◽  
Post Monsoon ◽  
North East ◽  
Drinking And Irrigation

AbstractDeterioration of surface water quality in various parts of India due to increasing urbanization has led to the extensive usage of groundwater for various domestic and irrigation needs, thereby raising concerns over its quality. However, there are very few studies focussing over the issue of groundwater quality in North-Eastern region of India. In order to make an assessment of the quality of groundwater for drinking and irrigation purposes, this study was carried out in Shillong—the Capital City of Meghalaya State in North-East India during pre-monsoon and post-monsoon seasons of 2018. Standard sampling and analytical procedures were followed for groundwater quality assessment. Minimal variation was observed in the water quality of pre- and post-monsoon seasons. However, the study found that groundwater samples are having acidic pH and presence of nitrate is also reported. Some of the samples also showed the presence of mercury, nickel, and cadmium. The presence of these contaminants could be attributed to the industrial activities in the state. Overall, the groundwater quality was found suitable for drinking and irrigation purposes after conventional treatment. Hydrochemical studies further inferred that groundwater properties in the region are influenced by the rock weathering along with the atmospheric precipitation.

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