scholarly journals Hydro-geochemical Assessment of Seawater Intrusion in Freshwater Shallow Aquifer in Southeastern Coastal of Cuddalore District, Tamilnadu, India

As the coastal line of Tamilnadu is long, it may have been affected due to sea water intrusion by natural (sea level rise) and anthropogenic. Therefore, this study deals with the Hydro chemical assessment of seawater interruption in freshwater aquifer in Parangipettai region. For this assessment, the groundwater samples have been collected in various locations of Parangipettai region for both pre and post-monsoon period. The collected samples were tested by laboratory method for the identification of major cat ions and anions, namely TDS, EC, chloride, magnesium, Bicarbonate, calcium, sodium, potassium, and sulphate. The spatial maps for all the parameters were carried out using the ArcGIS 10.2 version for the purpose of better understanding the quality of groundwater. The results obtained through laboratory method are used to create Salinity and sodium risk of irrigation water in US salinity diagram, Gibbs diagram, permeability index and reconstructed diamond field of piper diagram using the watclast software. From the spatial maps, watclast diagrams and the standards recommended by WHO, BIS, and ISI, the SWI are discussed in detail to recommend the remedial measures to recover and restore the feature of groundwater in the Parangipettai region.

2017 ◽  
Vol 9 (2) ◽  
pp. 99 ◽  
Author(s):  
Ahmad Cahyadi ◽  
Wahyu Hidayat

The small island has a very unique hydrological characteristics. The unique character are low rainfall, rain catchment narrow and high vulnerability to seawater intrusion. This study aims to (1) analyze the groundwater hydrogeochemistry facies in Panggang Cay and (2) to analyze the evolution of groundwater hydrogeochemistry in Panggang Cay. Data used include major element analysis results of the groundwater samples taken from the study site. Hidrogeochemistry fasies of groundwater determined the type of diagram analysis stiff, while the analysis of the hydrogeochemistry evolution of groundater analyzed using piper diagram. Groundwater hydrochemical facies in Panggang Cay is MgCl2 with hydrogeochemical evolution of CaCO3 into MgCl2. The evolution of hydrogeochemistry fasies that occur indicate the sea water intrusion process.


2009 ◽  
Vol 6 (3) ◽  
pp. 909-914 ◽  
Author(s):  
K. Karunakaran ◽  
P. Thamilarasu ◽  
R. Sharmila

Groundwater samples collected at different locations in and around Namakkal were analyzed for their physicochemical characteristics. Ten locations of groundwater samples were collected and studied for every two month for the period June-2007 to December-2007. The present investigation is focused on the determination of physicochemical parameters such as temperature, taste, turbidity, electrical conductivity, pH, hardness, total solids, total dissolved solids, total suspended solids, chlorides, sulphate, nitrate, fluorides, dissolved oxygen, sodium, potassium andE.colibacterium. Groundwater suitability for domestic and irrigation purposes was examined by using WHO and BIS standards, which indicate the groundwater in a few areas, were not much suitable for domestic and agriculture purposes. Thus the objective of this study is to identify the quality of groundwater especially in the town and near by town where groundwater is used for domestic and agriculture purposes is discussed.


2018 ◽  
Author(s):  
Laili Fitria ◽  
Arwin Sabar

In terms of quantity, availability of raw water is quite abundant, but in terms of quality of raw water sources are threatened seawater intrusion in normal and dry year at dry season. Groundwater in Pontianak City is a peat-coloured water and acidic. In existing condition, at dry season in normal year, when intake in Pontianak City gets sea water intrusion, they take raw water from Penepat Intake and only 30 % of habitants in Pontianak City get served. Drinking water is needed to meet the needs of the community, both in terms of quality, quantity, and continuity. Therefore, we need Master Plan of SPAM (Sistem Penyediaan Air Minum) Development (RIP-SPAM) PDAM Pontianak City that is based on design criteria for development of water supply and water demand projections for a period which is divided into several stages. This study will discuss the master plan for development of SPAM for shortterm until 2015 for MDGs target achievement in Pontianak City, 82,5% of inhabitants could be served. With Quantitative Method, we will calculate drinking water needs, then make Scenario Development of SPAM Pontianak by revitalization of Intake Penepat and using the reverse osmosis. With SPAM developments scenario, 92,64% of inhabitants in Pontianak will be served in 2015 (exceed MDGs target).


Author(s):  
Delima Panjaitan ◽  
Johannes Tarigan ◽  
Abdul Rauf ◽  
Esther SM Nababan

Author(s):  
I Made Sukearsana ◽  
I Gusti Bagus Sila Dharma ◽  
I Wayan Nuarsa

The total population of District Kuta Utara 2014 recorded 68.422 people with an average population density of 2,021 people/km2 while the number of tourism accommodation facilities (hotels, villas, restaurants) recorded 399 pieces. The rapid of population growth and the development of tourism accommodation facilities require ground water more increasing. Intake of large amounts of ground water potential to cause pollution/ sea water intrusion. This study aims to determine the quality of the groundwater, knowing distribution maps sea water intrusion and to predict the level of sea water intrusion coming years. This research method uses descriptive quantitative method. Furthermore, to determine the quantity and quality of ground water was measured groundwater levels and analysis of the parameters of temperature, total dissolved solid, pH, chloride, hardness and electrical conductivity of the 60 sample wells. Results of analysis of each of the key parameters that can be mapped and known overlay distribution maps sea water intruded area. The observation of the quantity and quality of groundwater in coastal areas of Kuta Utara subdistrict shows the range of the depth of the ground water level between -5.15 meters to -22.16 meters. Results of the analysis of ground water quality of the 60 groundwater samples showed that there has been a decline in the quality of ground water is as much as 14 samples total dissolved solid (TDS) the highest reaches 1,122 mg/ l, the highest electrical conductivity reached 1,677 ìMhos / cm and the highest chloride reached 532, 5 mg/l. Distribution maps sea water intruded area shows that in coastal areas troubled district of Kuta Utara indicated seawater intrusion, especially in the area of Petitenget and Batubelig, Kerobokan Kelod Village area of 78.44 Ha. Prediction of sea water intrusion in 2022 was highest in the area of tourism accommodation caused by ground water extraction enough much, kind of gray-brown soil regosol has a rough texture and high permeability characteristics so it is easy to pass groundwater.


2021 ◽  
Vol 4 (1) ◽  
pp. 176
Author(s):  
Muhammad Sehah ◽  
Mitha Syahfitri ◽  
Sunardi Sunardi

The estimation of the distribution of the sea water intrusion through the rivers in Ujungmanik Village, Kawunganten District, Cilacap Regency has been carried out using the Wenner configuration resistivity geoelectric. This research aims to estimate the distribution of sea water intrusion through rivers in Ujungmanik Village, Kawunganten District, Cilacap Regency based on geoelectric resistivity and conductivity data of groundwater. The geoelectric data acquisition was carried out on four lines. They were Wen1 Line, Wen2 Line, Wen3 Line, and Wen4 Line. Each line had a range of 200 meters. The results of geoelectric data processing showed that the subsurface rock structure consisted of sand, clay, sandy loam, and sandy clay. The Seawater intrusion shown by the sand layer occurred in all trajectories which had a range of resistivity value of 0.20 - 2.79 Ωm. Groundwater samples was carried out at fifteen points with the conductivity value varies between 1363 - 4145 µS / cm so that they can be classified that the water was fresh and brackish due to the sampling done in the rainy season. From this research it can be implied that the entire Ujungmanik  area is evenly intruded by the sea water at the coordinates 7º38ꞌ15.62ꞌꞌLS 108°57ꞌ20.89ꞌꞌBT to 7º39ꞌ22.86ꞌꞌLS 108º56ꞌ35.33ꞌꞌBT.


2020 ◽  
Vol 1 (2) ◽  
pp. 30-38
Author(s):  
Wael Ragab GAWEISH ◽  
◽  
Igor’ Alekseevich MARAEV ◽  
Mohamed Abdel Zaher MOHAMED ◽  
Ibrahim Mohamed DARWISH ◽  
...  

Research relevance. The study area suffers from lack of surface water and located at no.rtheastern part of El-Bahariya oasis, near from El-Gedida mine, where iron ore is extracted. Therefore groundwater may be contaminated from ElGedida mine, so it’s necessary to study its quality by hydrochemical analyses. Research objectives: assessment the quality of groundwater using different of analyses of quality of groundwater and studying the feasibility of using it for different purposes like drinking, irrigation and domestic purposes. Methodology. Collected groundwater samples were analyzed for determining the concentration of various Anions and Cations, Concentration of Hydrogen Ions pH, Total Dissolved Solids T.D.S, Electrical Conductivity σ, Total Water Hardness C, Sodium Adsorption Ratio SAR, Sodium Content SC, Piper diagram, Schoeller Diagram and USSL Diagram for evaluating the quality of groundwater for drinking, domestic and irrigation purposes Results. Based on the result of the hydrochemical analyses of collected groundwater samples. 1. Water sample no. 4, which is located in the southeastern part of the study area, is classified as a good water for drinking and domestic purposes. 2. Water samples no. 4 and 5, which located at southeastern and southwestern parts of the study area, were classified as good suitability for irrigation of all types of crops, but, water samples no. 7 and 9 aren’t suitable for irrigation, Except crops capable of withstand very high salinity.


Improved use of groundwater is often causing intrusion of seawater. The intrusion of seawater also takes place in coastal areas. In this analysis, the distribution and the levels of intrusion in the research area (Kanyakumari district, Tamilnadu, India) are determined. The test was done using random samples at a period of 15 days in which 30 different samples were taken in 5 different locations with a certain distance from the seashore, then chemical analysis including pH, electrical conductivity (EC), total dissolved solids (TDS), chloride, sodium, calcium, magnesium, carbonate, and bicarbonate water quality parameters were carried out. Chloride Bicarbonate Ratio was used for the calculation of the penetration rate of the seawater, and subsequently chloride and electric conductivity were defined as type and quality of water characters. The results showed that the shallow aquifer was intruded by seawater at several sample levels, which was included in the normal to high intrusion classification. The sea water intrusion was classified as freshwater to saltwater, the concentrations in chloride ranged from 159 to 6021 mg / L. The ratio of bicarbonate chloride was 0.28 to 21.46, normally above 15.5, indicating that groundwater was disturbed. As a result, in comparison to standards or other seawater intrusion indicators, Rajakamangalam-well 1 (RM-W1) has been affected by seawater intrusion highly.


2018 ◽  
Vol 5 (2) ◽  
pp. 93
Author(s):  
Ahlul Ryntan Tiara ◽  
I. S. Banuwa ◽  
R. Qurniati ◽  
S. B. Yuwono

The mangrove in a complex ecosystem has the important role for the environment. One of its ecological role is the barrier of sea water intrusion. The mangrove has the ability to filter seawater entering the mainland so that water entering the mainland can be more fresh. This study aims to determine the effect of mangrove density and distance to well water quality as well as to know the interaction between mangrove density with distance to the quality of well water in Sidodadi village. This research is arranged factorially in randomized block design. The result showed that pH, electric conductivity, total dissolved solid, and salinity of well water are significantly influenced by mangrove density, well distance to mangrove and interaction between them. While dissolved oxygen (dissolved oxygen) and well water temperature are not significantly influenced by mangrove density, well distance to mangrove and interaction between them.Keywords: mangroves density, groundwater qualityKeberadaan mangrove sebagai sebuah ekosistem yang kompleks memiliki peran yang penting bagi lingkungan sekitarnya. Salah satu peran ekologis mangrove bagi lingkungan adalah sebagai penahan intrusi air laut. Mangrove memiliki kemampuan memfilter air laut yang masuk ke daratan sehingga air yang masuk ke daratan dapat lebih tawar. Penelitian ini bertujuan untuk mengetahui adanya pengaruh kerapatan mangrove dan jarak terhadap kualitas air sumur serta mengetahui adanya interaksi antara kerapatan mangrove dengan jarak terhadap kualitas air sumur di Desa Sidodadi. Penelitian pengaruh kerapatan mangrove dan jarak dari garis pantai terhadap kualitas air sumur disusun secara faktorial dalam Rancangan Acak Kelompok Lengkap. Hasil penelitian diketahui bahwa pH, daya hantar listrik, total dissolved solid, dan salinitas air sumur nyata dipengaruhi oleh kerapatan mangrove, jarak sumur ke mangrove dan interaksi diantara keduanya. Sedangkan dissolved oxygen (oksigen terlarut) dan suhu air sumur tidak nyata dipengaruhi oleh kerapatan mangrove, jarak sumur ke mangrove dan interaksi diantara keduanya.Kata kunci: kerapatan mangrove, kualitas air sumur


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