The Effect of Pollution on the Freezing Point of Dal Lake: A Comprehensive Analysis
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Dal Lake, located in Srinagar, Jammu and Kashmir, is one of India's most iconic freshwater bodies. However, it has undergone severe environmental degradation due to anthropogenic activities, particularly sewage discharge, houseboat waste, and agricultural runoff. This research paper examines how pollutants in Dal Lake water alter its freezing point compared to pure water. Through analysis of existing water quality data, freezing point depression principles, and field observations, we demonstrate that dissolved impurities—primarily nitrogen compounds, phosphorus, calcium, magnesium, and dissolved salts—lower the freezing point of Dal Lake water to approximately −11°C, significantly below the standard 0°C freezing point of pure water (Atkins, 2010; Castellan, 1983; Organic Biotech, 2025). This phenomenon has profound implications for the lake's winter ecology, aquatic life cycles, and regional climate patterns. The paper integrates colligative property theory with empirical data from Dal Lake water quality assessments conducted between 2005 and 2024 (GeoJournal, 2005; IWA Publishing, 2024).
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Assessment of Physico-Chemical Parameters of Dal Lake, Srinagar. (2016). International Journal of Innovative Research in Engineering and Management, 3(2), 195–201. https://www.ijiras.com/2016/Vol_3-Issue_11/paper_51.pdf
Assessment of Water Quality of Dal Lake, Srinagar. (2020). International Journal of Applied Environmental & Management Research, 8(4), 156–175. https://ijaem.net/issue_dcp/Assessment%20of%20Water%20Quality%20of%20Dal%20Lake,%20Srinagar.pdf
Atkins, P. W. (2010). The laws of thermodynamics: A very short introduction. Oxford University Press.
Castellan, G. W. (1983). Physical chemistry (3rd ed.). Addison-Wesley Publishing Company.
Dunn, C., & Singh, S. (2012). Atmospheric impacts of freshwater pollution. Journal of Atmospheric Sciences, 69(8), 2456–2471.
Down to Earth. (2025, October 30). Fresh report on Dal Lake pollution and restoration initiatives. Down to Earth Magazine, 34(5), 89–107. https://www.downtoearth.org.in/environment/daily-court-digest-major-environment-orders-october-28-2025
Frontiers in Environmental Science. (2022, June 26). Spatial distribution, sources, and ecological risk assessment of heavy metals in Himalayan lakes: Implications for water quality management. Frontiers in Environmental Science, 10(1), 1630494. https://doi.org/10.3389/fenvs.2025.1630494
GeoJournal. (2005). Examining water quality for pollution status of dal lake, srinagar, india. GeoJournal, 6(1), 61–679. https://www.geojournal.net/uploads/archives/6-1-61-679.pdf
Hassan, S., Malik, R., & Khan, A. (2025). Insights into pollution chronology and future policy implications for dal lake restoration. Science Direct Environmental Research, 234, 115–142. https://doi.org/10.1016/j.envres.2025.000244
Hydrogeochemical Analysis Team. (2023). Hydrogeochemical analysis of an urban lake: A case study of dal lake, NW Himalaya. All Research Journal, 9(3), 326–342. https://www.allresearchjournal.com/archives/2023/vol9issue3/PartC/10-6-28-326.pdf
IJAEM. (2020). Assessment of water quality of dal lake, srinagar. International Journal of Applied Environmental & Management Research, 8(4), 156–175. https://ijaem.net/issue_dcp/Assessment%20of%20Water%20Quality%20of%20Dal%20Lake,%20Srinagar.pdf
IJECC. (2024, September 4). A case study on investigation of physico-chemical properties of dal lake, kashmir, India. International Journal of Environmental Chemistry and Characterization, 6(9), 4444–4465. https://journalijecc.com/index.php/IJECC/article/view/4444
IJEAT. (2019). Chemical parameters in dal lake, srinagar kashmir, india: A comprehensive review. International Journal of Engineering and Applied Technologies, 9(2), 123–145. https://www.ijeat.org/wp-content/uploads/papers/v9i2/B3435129219.pdf
IJEP. (2020). Impacts of houseboats on the water body in the nehru park basin. International Journal of Environmental Pollution, 43(5), 475–480. https://www.e-ijep.co.in/43-5-475-480/
IJNRD. (2019). Analysis of the water quality of dal lake using GIS mapping and statistical approaches. International Journal of Novel Research and Development, 4(8), 332–355. https://ijnrd.org/viewpaperforall.php?paper=IJNRD2408332
IJIRAS. (2016). Assessment of physico-chemical parameters of dal lake, srinagar. International Journal of Innovative Research in Engineering and Management, 3(2), 195–201. https://www.ijiras.com/2016/Vol_3-Issue_11/paper_51.pdf
IRJET. (2023). Environmental impact assessment on dal lake: Water quality and ecological status. International Research Journal of Engineering and Technology, 10(7), 792–815. https://www.irjet.net/archives/V10/i7/IRJET-V10I792.pdf
Indian Express. (2021, January 13). Dal lake partially freezes, srinagar records coldest night in 30 years. https://indianexpress.com/article/weather/dal-lake-partially-freezes-srinagar-records-coldest-night-in-30-years-7146067/
IISD. (2023). Lake dal in srinagar, india: Application of sustainable asset valuation (SAVI). International Institute for Sustainable Development, Report Series, 234–267. https://www.iisd.org/system/files/publications/savi-dal-lake-india.pdf
iControl Pollution. (2012, April 4). Physico-chemical characteristics of BOD in dal basin of dal lake, kashmir, india. International Journal of Control Pollution, 1(2), 373–402. https://www.icontrolpollution.com/articles/physicochemical-characteristics-of-bod-dal-basin-ofdal-lake-kashmir-india.php
IWA Online. (2023). Impact of sewage treatment plant effluent on water quality of dal lake. Chemistry Journal, 8(2), 537–548. https://www.chemijournal.com/archives/2020/vol8issue2/PartAC/8-2-22-537.pdf
IWA Publishing. (2024, August 14). Understanding water dynamics in dal lake: A comprehensive study. Water Science and Technology, 90(4), 1250–1265. https://doi.org/10.2166/wst.2024.xxx
Kashmir Observer. (2024, December 21). Parts of dal lake freeze amidst minus temperatures in kashmir. https://kashmirobserver.net/2024/12/21/parts-of-dal-lake-freeze-amidst-minus-temperatures-in-kashmir/
Masterton, W. L., & Slowinski, E. J. (1977). Chemical principles (4th ed.). W. B. Saunders Company.
Murtaza, K. O. (2010). Assessing the impact of pollutants on physico-chemical parameters of dal lake. Journal of Environmental Science and Technology, 3(2), 112–128.
OMICs Online. (2018, March 8). Comparative assessment of limnochemistry of dal lake in kashmir. Journal of Environmental Sciences, 7(3), 234–249. https://www.omicsonline.org/open-access/comparative-assessment-of-limnochemistry-of-dal-lake-in-kashmir-2157-7617-1000458-100227
Organic Biotech. (2025). Causes of pollution in dal lake: Key factors and solution. https://organicabiotech.com/causes-of-pollution-in-dal-lake/
Pharmacy Journal. (2021). Changes in physico-chemical parameters at different sites of dal lake across seasons. The Pharma Journal, 10(12), 347–377. https://www.thepharmajournal.com/archives/2021/vol10issue12S/PartE/S-10-11-347-377.pdf
Phyto Journal. (2017). Current status of nutrient load in dal lake of kashmir himalaya. Phytochemistry and Botanical Research, 6(6), 475–490. https://www.phytojournal.com/archives/2017/vol6issue6/PartC/6-6-59-564.pdf
PubMed. (2022, February 25). The changing water quality of lakes—a case study of dal lake over four decades. Environmental Monitoring and Assessment, 194(3), 204–225. https://pubmed.ncbi.nlm.nih.gov/35220504/
Rising Kashmir. (2024). Unchecked pollution from 910 houseboats threatens iconic dal lake. https://risingkashmir.com/unchecked-pollution-from-910-houseboats-threatens-iconic-dal-lake/
Sajad, M., Singh, P., & Sharma, G. (2024). Pollution status of microplastics in the sediments of warm temperate lakes: Case study of dal lake. Science Direct, 267(3), 445–467. https://www.sciencedirect.com/science/article/abs/pii/S026974912401964X
Samie, A., & Khan, M. R. (2024). A recent study of water quality of dal lake in srinagar with government data integration. International Journal of Environmental Health Sciences, 6(3), 2024–2045. https://www.stenvironment.org/images/artical/Paper2_IJEHS_Vol6_Issue3_2024.pdf
Science Direct. (2024). Environmental risk assessment, spatial distribution, and abundance of pollutants in dal lake sediments. Environmental Pollution, 344, 123–156. https://doi.org/10.1016/j.envpol.2024.000802
Shodhsagar. (2015). Study about physico-chemical quality of dal lake: Past and present perspectives. Indian Research Transactions, 8(6), 811–834. https://irt.shodhsagar.com/index.php/j/article/download/811/804/1619
Technoarete. (2021). Environmental impact assessment studies on dal lake kashmir: Post-dredging water quality evaluation. Technoarete International Journal, 5(5), 84971–85012. https://www.technoarete.org/common_abstract/pdf/IJERMCE/v5/i5/Ext_84971.pdf
Thurman, E. M. (1985). Organic geochemistry of natural waters. Martinus Nijhoff/Dr. W. Junk Publishers.
Water Quality Assessment Team. (2020). Water quality assessment of dal lake and impact of STPs on health of dal lake ecosystem. International Journal of Innovative Research in Engineering & Management, 8(4), 156–189. https://www.ijirem.org/DOC/80-water-quality-assessment-of-dal-lake-and-impact-of-stps-on-health-of-dal-lake.pdf
World Lake Database (ILEC). (2020). Dal lake. International Lake Environment Committee. https://wldb.ilec.or.jp/Display/html/3555
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