Your search found 13 records
1 Hiscock, K. M.; Rivett, M. O.; Davison, R. M. (Eds.) 2002. Sustainable groundwater development. London, UK: The Geological Society. 352p. (Geological Society special publication no.193)
Groundwater development ; Groundwater management ; Aquifers ; Arsenic ; Simulation models ; Institutional development ; Water pollution ; Water quality ; Climate change / Europe / UK / Arab countries / Bangladesh / Sri Lanka / Russian Federation / Romania / Andean basins / Meherpur / Jaffna Peninsula / Valigamam / Lake Ladoga / Ploiesti
(Location: IWMI-HQ Call no: 333.9104 G000 HIS Record No: H038970)
2 Mikunthan, T. 2005. Status of groundwater quality in Jaffna Peninsula: Special reference to nitrate and chloride. In Galagedara, L. W. (Ed.). Water resources research in Sri Lanka: Symposium Proceedings of the Water Professional’s Day 2005. Peradeniya, Sri Lanka: PGIA. pp.153-162.
Water quality ; Groundwater ; Nitrates ; Chlorides ; Water pollution ; Assessment ; Wells ; Drinking water ; Water supply / Sri Lanka / Jaffna Peninsula / Chunnakam / Velanai / Vaddukoddai / Araly South / Karaveddy / Kondavil
(Location: IWMI HQ Call no: IWMI 631.7 G744 GAL Record No: H040713)
3 Punthakey, J. F.; Gamage, N. P. D. 2006. Coupled flow and salinity transport modelling and assessment of groundwater availability in the Jaffna Peninsula, Sri Lanka. In Water, Engineering and Development Centre (WEDC). Sustainable development of water resources, water supply and environmental sanitation: 32nd WEDC International Conference, Bandaranaike Memorial International Conference Hall, Colombo, Sri Lanka, 13th - 17th November 2006. Preprints. Leicestershire, UK: Water, Engineering and Development Centre (WEDC) pp.657-664.
Groundwater management ; Water availability ; Wells ; Salinity ; Salt water intrusion ; Models ; Water balance / Sri Lanka / Jaffna Peninsula
(Location: IWMI HQ Call no: 333.91 G000 WAT Record No: H041057)
(0.85 MB)
4 Mathanakaran, R. 1982. Water resources development in the Jaffna Peninsula, Sri Lanka. Thesis. Thesis submitted to the Department of Post-Graduate Studies and Research in Geography for the award of the Degree of Doctor of Philosophy, University of Mysore, Mysore, India. 239p.
Groundwater development ; Groundwater recharge ; Water balance ; Aquifers ; Geology ; Topography ; Rain ; Soils ; Salinity ; Runoff ; Infiltration ; Water pollution / Sri Lanka / Jaffna Peninsula
(Location: IWMI HQ Call no: e-copy SF Record No: H043133)
5 Kodituwakku, K. A. W. 2009. Groundwater resources in Sri Lanka and its importance towards economic development. Economic Review, 35(3-4):32-36.
(Location: IWMI HQ Call no: P 8029 Record No: H043745)
(0.55 MB)
6 Pathmarajah, S.; Mowjood, M. I. M. (Eds.) 2008. Water supply, sanitation and wastewater management: progress and prospects towards clean and healthy society. Proceedings of a symposium, Faculty of Agriculture, University of Peradeniya, Sri Lanka, 23 June 2008. Peradeniya, Sri Lanka: University of Peradeniya, Faculty of Agriculture; Peradeniya, Sri Lanka: Capacity Building Network in Integrated Water Resources Management, Sri Lanka (Cap-Net Lanka). 119p.
Water supply ; Tube wells ; Land use ; Groundwater ; Water quality ; Drinking water treatment ; Case studies ; Wetlands ; Wastewater ; Public health ; Sanitation / Sri Lanka / Jaffna Peninsula / Pussella Oya Sub Catchment / Batticaloa / Trincomalee
(Location: IWMI HQ Call no: 628.114 G744 PAT Record No: H043787)
(0.31 MB)
7 Arasalingam, Sutharsiny; Pathmarajah, S.; Mikunthan, T.; Vithanage, M.; Manthrithilake, Herath. 2013. Impact of agricultural activities on groundwater quality and its suitability for drinking in Valikamam area, Jaffna Peninsula. In Sri Lanka Water Partnership (Lanka Jalani); International Water Management Institute (IWMI); Unilever-Pureit. Proceedings of the First Young Water Professionals Symposium, Colombo, Sri Lanka, 22-23 November 2012. Colombo, Sri Lanka: Sri Lanka Water Partnership (Lanka Jalani); Colombo, Sri Lanka: International Water Management Institute (IWMI); Colombo, Sri Lanka: Unilever-Pureit. pp.74-81.
Groundwater resources ; Drinking water ; Water quality ; Agricultural production ; Wells ; Aquifers ; Fluorides ; Nitrates ; Chlorides ; Calcium ; Magnesium ; Carbonates ; Bicarbonates ; Sodium ; Potassium / Sri Lanka / Jaffna Peninsula / Valikamam / Chunnakam aquifer
(Location: IWMI HQ Call no: 333.91 G744 SRI Record No: H046158)
http://lankajalani.org/wp-content/uploads/2015/03/Proceedings-YWPS.pdf
https://vlibrary.iwmi.org/pdf/H046158.pdf
https://vlibrary.iwmi.org/pdf/H046158.pdf
(0.64 MB) (5.26 MB)
8 Arasalingam, Sutharsiny; Manthrithilake, Herath; Pathmarajah, S.; Mikunthan, T.; Vithanage, M. 2013. Seasonal variation of Nitrate-N in groundwater: a case study from Chunnakam aquifer, Jaffna Peninsula [Abstract only] In Ileperuma, O.; Priyantha, N.; Chandrajith, R.; Navaratne, A.; Perera, A.; Yatigammana, S.; Wijesundara, S.; Rathnayake, S. (Eds). 2013. Proceedings of the Second International Symposium on Water Quality and Human Health: Challenges Ahead, Peradeniya, Sri Lanka, 15-16 March 2013. Peradeniya, Sri Lanka: University of Peradeniya. Postgraduate Institute of Science. pp.7.
Groundwater pollution ; Water quality ; Nitrates ; Contamination ; Drinking water ; Aquifers ; Wells / Sri Lanka / Jaffna Peninsula / Chunnakam aquifer
(Location: IWMI HQ Call no: e-copy only Record No: H046230)
(0.09 MB)
The Jaffna Peninsula has four main aquifer systems, of which the largest Chunnakam aquifer is in the Valikamam area. This is an intensively cultivated area in the Jaffna Peninsula, and consequently, excessive application of nitrogen fertilizer is found. Other sources of nitrate include organic manures, and urine and excreta of animals through human activities. The aim of this study was to assess the N-nitrate contamination in drinking water of the Chunnakam aquifer, which was a sub-objective of a research project carried out by the International Water Management Institute (IWMI). Forty four (44) groundwater samples were collected from wells representing different uses and land use patterns. The sampling covered the period from January to December, 2011, representing all seasons. Nitrate-N in sampled water was determined colorimetrically using a spectrophotometer. The spatial variations of the water quality were mapped using ArcGIS 10. Nitrate-N values from domestic, domestic with home garden and public wells ranged from below 0.1 to 12.1 mg L'I. During the rainy season, 38% of the agro-wells exceeded the limit of WHO drinking water guidelines (10 mg L· I) and these were not suitable for drinking purposes. However, this percentage was 15% at the end of the dry season. A decreasing trend in nitrate-N concentration was observed from January to March. During the rainy season, the soil was wet enough up to the water table facilitating nitrate leaching. Nitrate-N found in most of the wells surrounded by areas with highland crops (onions, chillies, tobacco and brinjals) also exceeded the acceptable level (10 rug L'l). Even though these wells are used for agricultural purposes, people who work in the field use agro-wel1s for drinking. This water pollution is very likely related to the heavy use of N-based fertilizers for cultivation in the region. This leads to groundwater unsafe for drinking. Therefore, effective management of groundwater quality in the region is vital and further, creating awareness among population would possibly reduce the excessive use of chemical fertilizers in agriculture.
9 International Water Management Institute (IWMI). 2013. Proceedings of the National Seminar on Groundwater Governance in Sri Lanka, Colombo, Sri Lanka, 15 August 2013. Colombo, Sri Lanka: International Water Management Institute (IWMI). 134p. [doi: https://doi.org/10.5337/2014.201]
Groundwater irrigation ; Groundwater recharge ; Groundwater development ; Groundwater management ; Water governance ; Water use ; Water level ; Water supply ; Drinking water ; Water quality ; Water pollution ; Surface water ; Aquifers ; Wells ; Tanks ; Arid zones ; Pumps ; Stakeholders ; Farmers ; Hydrogeology ; Fluorides ; Irrigation management ; Research ; Monitoring ; Sustainability / Sri Lanka / Lao People s Democratic Republic / Jaffna Peninsula
(Location: IWMI HQ Call no: e-copy only Record No: H046388)
(5 MB)
10 Mikunthan, T.; Vithanage, M.; Pathmarajah, S.; Arasalingam, Sutharsiny; Ariyaratne, Ranjith; Manthrithilake, Herath. 2013. Hydrogeochemical characterization of Jaffna’s aquifer systems in Sri Lanka. Colombo, Sri Lanka: International Water Management Institute (IWMI). 69p. [doi: https://doi.org/10.5337/2014.001]
Hydrology ; Geochemistry ; Aquifers ; Groundwater recharge ; Water quality ; Water levels ; Nitrogen fertilizers ; Contamination ; Drinking water ; Evapotranspiration ; Wells ; Soils ; Land use ; Rainfall patterns / Sri Lanka / Jaffna Peninsula / Chunnakam
(Location: IWMI HQ Call no: IWMI Record No: H046389)
(7 MB)
11 Rink, Paul; Semasinghe, Christina; Manthrithilake, Herath. 2016. The potential benefits of rainwater harvesting for households in the Jaffna Peninsula. Sri Lanka Journal of Aquatic Sciences, 21(1):59-65.
Rainwater ; Water harvesting ; Household consumption ; Groundwater extraction ; Water supply ; Domestic water ; Drinking water ; Water use ; Cost benefit analysis / Sri Lanka / Jaffna Peninsula
(Location: IWMI HQ Call no: e-copy only Record No: H047448)
(0.45 MB)
Recent development activities in the Jaffna Peninsula are threatening the viability of the region’s natural groundwater supply. Rainwater Harvesting (RWH) represents one important approach to remedying this situation. By accumulating freshwater during Jaffna’s wet season, household RWH systems can supply drinking and cooking water for use during the water-limited dry season. Additionally, a RWH calculator created by the International Water Management Institute (IWMI) can be used to customize a RWH system for each family given particular household parameters such as rooftop size and daily extraction rate. When paired with cost estimates for tank construction, a RWH installation cost-benefit analysis can be determined for either a specific household or for a collection of households within the Jaffna region.
12 Sood, Aditya; Manthrithilake, Herath; Siddiqui, Salman; Rajah, Ameer; Pathmarajah, S. 2015. Managing shallow aquifers in the dry zone of Sri Lanka. Environmental Monitoring and Assessment, 187(7):1-16. [doi: https://doi.org/10.1007/s10661-015-4584-5]
Groundwater recharge ; Groundwater management ; Groundwater extraction ; Water balance ; Water resources ; Aquifers ; Arid zones ; Remote sensing ; Density ; Wells ; Rain / Sri Lanka / Jaffna Peninsula / Valikamam
(Location: IWMI HQ Call no: e-copy only Record No: H047699)
This study looks at the groundwater issues in the dry zone of Sri Lanka and shows how the use of remote sensing with high-resolution images can help in groundwater management. A new approach is developed for automatic extraction of the location of agrowells using high-spatial-resolution satellite imageries. As an example, three pilot sites in three different aquifer systems in the country are considered, and their highresolution images are analyzed over two temporal time periods. The analysis suggests that the well density in all three regions has increased over the last few years, indicating higher levels of groundwater extraction. Using the well inventory developed by this new approach, the water budgeting was prepared for the mainland of Jaffna Peninsula. The analysis shows a wide variation in well density in the Jaffna Peninsula, ranging from (as little as) less than 15 wells per square kilometer to (as high as) more than 200 wells per square kilometer. Calculations made for the maximum allowable water extraction in each administrative division of Jaffna show that less than 3 h of daily extraction per well is possible in some districts. This points to an increasing pressure on groundwater resources in the region and thus highlights the importance of understanding groundwater budgets for sustainable development of the aquifers.
13 Arasalingam, Sutharsiny; Manthrithilake, Herath; Pathmarajah, S.; Mikunthan, T.; Vithanage, M. 2020. Geo-statistical approach for prediction of groundwater quality in Chunnakam Aquifer, Jaffna Peninsula. Journal of Jaffna Science Association, 2(1):12-24.
Groundwater ; Water quality ; Aquifers ; Spatial distribution ; Forecasting ; Water properties ; Wells ; Geostatistics ; Models / Sri Lanka / Jaffna Peninsula / Valikamam / Chunnakam Aquifer
(Location: IWMI HQ Call no: e-copy only Record No: H050216)
http://journal.thejsa.org/index.php/jsaj/article/view/13/9
https://vlibrary.iwmi.org/pdf/H050216.pdf
https://vlibrary.iwmi.org/pdf/H050216.pdf
(3.03 MB) (3.03 MB)
Chunnakam aquifer is the main limestone aquifer of Jaffna Peninsula. The population of the Jaffna Peninsula depends entirely on groundwater resources to meet all of their water requirements. Thus for protecting groundwater quality in Chunnakam aquifer, data on spatial and temporal distribution are important. Geostatistics methods are one of the most advanced techniques for interpolation of groundwater quality. In this study, Ordinary Kriging and IDW methods were used for predicting spatial distribution of some groundwater characteristics such as: Electrical Conductivity (EC), pH, nitrate as nitrogen, chloride, calcium, carbonate, bicarbonate, sulfate and sodium concentration. Forty four wells were selected to represent the entire Chunnakam aquifer during January, March, April, July and October 2011 to represent wet and dry season within a year. After normalization of data, variogram was computed. Suitable model for fitness on experimental variogram was selected based on less Root Mean Square Error (RMSE) value. Then the best method for interpolation was selected, using cross validation and RMSE. Results showed that for all groundwater quality, Ordinary Kriging performed better than IDW method to simulate groundwater quality. Finally, using Ordinary Kriging method, maps of groundwater quality were prepared for studied groundwater quality in Chunnakam aquifer. The result of Ordinary Kriging interpolation showed that higher EC, chloride, sulphate and sodium concentrations are clearly shown to be more common closer to the coast, and decreasing inland due to intrusion of seawater into the Chunnakam aquifer. Also higher NO3 - - N are observed in intensified agricultural areas of Chunnakam aquifer in Jaffna Peninsula.
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