This study explores the intricate relationship between population growth and water resource management in Louisiana, emphasizing the spatial distribution of water quality. Human activities, particularly urbanization, have significantly impacted the state’s water resources, with population growth driving increased water withdrawals for public supply, industry, and power generation. By employing a Geographic Information System (GIS)-centered approach, this research utilizes Louisiana’s census data from 1999 to 2020 to illustrate population shifts and their effects on water resource distribution. The study also incorporated advanced remote sensing techniques, using Sentinel 2 imagery to assess the water quality through the Trophic State Index (TSI). The TSI, calculated based on the near-infrared (NIR) and Red bands of Sentinel-2 imagery, provided a nuanced understanding of the nutrient levels and clarity/ quality of water bodies across the state. The study reveals a significant correlation between population density and water withdrawals, with higher populations leading to greater extraction from both groundwater and surface water sources. For instance, densely populated parishes like East Baton Rouge and Orleans showed substantially higher water withdrawals for public supply, industry, and power generation compared to less populated areas. The water quality analysis indicated that many water bodies in Louisiana are experiencing high levels of nutrient enrichment, with rivers and streams accounting for 86% of the impaired water bodies, and lakes, reservoirs, and coastal waters showing hypereutrophic conditions in up to 96% of cases. These results underscore the significant impact of human activities on Louisiana’s water resources, highlighting the need for effective water management practices that consider both quantity and quality. The study therefore advocates for the implementation of water conservation measures, responsible consumption, and pollution prevention strategies to ensure the sustainable use of water resources and the preservation of water quality across Louisiana.
References
[1]
Jury, W.A. and Vaux, H.J. (2007) The Emerging Global Water Crisis: Managing Scarcity and Conflict between Water Users. In: AdvancesinAgronomy, Elsevier, 1-76. https://doi.org/10.1016/s0065-2113(07)95001-4
[2]
Khatri, N. and Tyagi, S. (2014) Influences of Natural and Anthropogenic Factors on Surface and Groundwater Quality in Rural and Urban Areas. FrontiersinLifeScience, 8, 23-39. https://doi.org/10.1080/21553769.2014.933716
[3]
Jindal, B., Sheri, L., et al. (2010) Louisiana Statewide Perspective on Water Resources. In Louisiana Reservoir Priority and Development Program. http://www.dotd.la.gov/Inside_LaDOTD/Divisions/Engineering/Public_Works/Dam_Safety/RPDP_Reports/La_Statewide_Perspective_On_Water_Resources_April_2010.pdf
[4]
Daryl, G.P., Nicole, B.E. and Karen, L. (2020) Louisiana’s Management of Water Resources: Performance Audit Services. https://app.lla.state.la.us/PublicReports.nsf/0/7AE69DA84B7F7E89862585040079C762/$FILE/LMWR.pdf
[5]
Wang, J., Da, L., Song, K. and Li, B. (2008) Temporal Variations of Surface Water Quality in Urban, Suburban and Rural Areas during Rapid Urbanization in Shanghai, China. EnvironmentalPollution, 152, 387-393. https://doi.org/10.1016/j.envpol.2007.06.050
[6]
Ellis, P.A. and Rivett, M.O. (2007) Assessing the Impact of Voc-Contaminated Groundwater on Surface Water at the City Scale. JournalofContaminantHydrology, 91, 107-127. https://doi.org/10.1016/j.jconhyd.2006.08.015
[7]
Ngah, M.S.Y.C. and Othman, Z. (2012) Impact of Land Development on Water Quantity and Water Quality in Peninsular Malaysia. Malaysian Journal of Environmental Management, 12, 113-120.
[8]
Tejwani, K.G. (1993) Water Management Issues: Population, Agriculture and Forests—A Focus on Watershed Management. In: Bonell, M., Hufschmidt, M.M. and Gladwell, J.S., Eds., HydrologyandWaterManagementintheHumidTropics: Hydrological Research Issues and Strategies for Water Management, Cambridge University Press, 496-525. https://doi.org/10.1017/cbo9780511564468.027
[9]
Liyanage, C. and Yamada, K. (2017) Impact of Population Growth on the Water Quality of Natural Water Bodies. Sustainability, 9, Article No. 1405. https://doi.org/10.3390/su9081405
[10]
Peters, N.E. and Meybeck, M. (2000) Water Quality Degradation Effects on Freshwater Availability: Impacts of Human Activities. WaterInternational, 25, 185-193. https://doi.org/10.1080/02508060008686817
[11]
Day, J.W., Kemp, G.P., Freeman, A.M. and Muth, D.P. (2014) Perspectives on the Restoration of the Mississippi Delta: The Once and Future Delta. Springer.
[12]
Borrok, D.M., Chen, J., Eldardiry, H. and Habib, E. (2017) A Framework for Incorporating the Impact of Water Quality on Water Supply Stress: An Example from Louisiana, Usa. JAWRAJournaloftheAmericanWaterResourcesAssociation, 54, 134-147. https://doi.org/10.1111/1752-1688.12597
[13]
Agrawal, K.K., Panda, C. and Bhuyan, M.K. (2021) Impact of Urbanization on Water Quality. In: Acharya, S.K. and Mishra, D.P., Eds., Current Advances in Mechanical Engineering, Springer, 665-673. https://doi.org/10.1007/978-981-33-4795-3_60
[14]
Wilson, C. and Weng, Q. (2010) Assessing Surface Water Quality and Its Relation with Urban Land Cover Changes in the Lake Calumet Area, Greater Chicago. EnvironmentalManagement, 45, 1096-1111. https://doi.org/10.1007/s00267-010-9482-6
[15]
Yu, D., Shi, P., Liu, Y. and Xun, B. (2013) Detecting Land Use-Water Quality Relationships from the Viewpoint of Ecological Restoration in an Urban Area. EcologicalEngineering, 53, 205-216. https://doi.org/10.1016/j.ecoleng.2012.12.045
[16]
Tsegaye, T., Sheppard, D., Islam, K.R., Tadesse, W., Atalay, A. and Marzen, L. (2006) Development of Chemical Index as a Measure of In-Stream Water Quality in Response to Land-Use and Land Cover Changes. Water, Air, andSoilPollution, 174, 161-179. https://doi.org/10.1007/s11270-006-9090-5
[17]
Zhang, W., Li, H., Sun, D. and Zhou, L. (2012) A Statistical Assessment of the Impact of Agricultural Land Use Intensity on Regional Surface Water Quality at Multiple Scales. InternationalJournalofEnvironmentalResearchandPublicHealth, 9, 4170-4186. https://doi.org/10.3390/ijerph9114170
[18]
WWNO (2022) Most of Louisiana’s Waterways Are Polluted Biggest Reasons: Fertilizer and Sewage. Coastal Desk. https://www.wwno.org/coastal-desk/2022-04-06/most-of-louisianas-waterways-are-polluted-biggest-reasons-fertilizer-and-sewage
[19]
Jarvie, H., Whitton, B. and Neal, C. (1998) Nitrogen and Phosphorus in East Coast British Rivers: Speciation, Sources and Biological Significance. ScienceoftheTotalEnvironment, 210, 79-109. https://doi.org/10.1016/s0048-9697(98)00109-0
[20]
Zimmerman, J.B., Mihelcic, J.R. and Smith, A.J. (2008) Global Stressors on Water Quality and Quantity. Environmental Science and Technology, 42, 4247-4254.
[21]
Stacker (2023) Fastest Growing Cities in Louisiana. https://stacker.com/louisiana/fastest-growing-cities-louisiana
[22]
World Population Review (2023) Louisiana Population 2023. https://worldpopulationreview.com
[23]
USA Facts (2021) Our Changing Population: Louisiana. https://usafacts.org/data/topics/people-society/population-and-demographics/our-changing-population/state/louisiana/
[24]
Roberts, F.A. (2023) Four Louisiana Parishes Rank in Top 10 in US for Population Loss in 2022.
[25]
Skinner, V. (2023) Louisiana’s Biggest Parishes Show Large Population Losses. The Center Square Contributor. https://www.thecentersquare.com/louisiana/article_835fe048-cf26-11ed-86f0-a3a9b0dff0bb.html
[26]
Potter, W.T. (2021) Census 2020 Results: Here’s How Louisiana Looks after a Decade of Change. https://www.theadvertiser.com/story/news/local/louisiana/2021/08/12/2020-census-data-louisiana-population-change/5566323001/
[27]
Stuart, C.G., Knochenmus, D.D. and McGee, B.D. (1994) Guide to Louisiana’s Ground-Water Resources (Vol. 94, No. 4085). US Geological Survey.
[28]
United States Geological Service (2007) How Important Is Groundwater? https://www.usgs.gov/faqs/how-important-groundwater#:~:text=Groundwater%20is%20the%20source%20of%20about%2037%20percent,a%20county%2Fcity%20water%20department%20or%20private%20water%20company
[29]
Borrok, D.M. and Broussard, W.P. (2016) Long-Term Geochemical Evaluation of the Coastal Chicot Aquifer System, Louisiana, USA. JournalofHydrology, 533, 320-331. https://doi.org/10.1016/j.jhydrol.2015.12.022
[30]
Giri, S. and Qiu, Z. (2016) Understanding the Relationship of Land Uses and Water Quality in Twenty First Century: A Review. JournalofEnvironmentalManagement, 173, 41-48. https://doi.org/10.1016/j.jenvman.2016.02.029
[31]
Trenberth, K.E., Dai, A., Rasmussen, R.M. and Parsons, D.B. (2003) The Changing Character of Precipitation. BulletinoftheAmericanMeteorologicalSociety, 84, 1205-1218. https://doi.org/10.1175/bams-84-9-1205
[32]
Van Der Hoek, W., Konradsen, F., Ensink, J.H.J., Mudasser, M. and Jensen, P.K. (2001) Irrigation Water as a Source of Drinking Water: Is Safe Use Possible? TropicalMedicine&InternationalHealth, 6, 46-54. https://doi.org/10.1046/j.1365-3156.2001.00671.x
[33]
Teixeira, Z., Teixeira, H. and Marques, J.C. (2014) Systematic Processes of Land Use/Land Cover Change to Identify Relevant Driving Forces: Implications on Water Quality. ScienceoftheTotalEnvironment, 470, 1320-1335. https://doi.org/10.1016/j.scitotenv.2013.10.098
[34]
America Counts Staff (2021) Louisiana: 2020 Census. United States Census Bureau.
[35]
Collier, A.L. (2018) Water Withdrawals by Source and Category in Louisiana Parishes, 2014-2015: U.S. Geological Survey Data Release. https://doi.org/10.5066/F78051VM
[36]
Duffin, J. (2023) The Resident Population in Louisiana 1960-2022. Statista. https://www.statista.com/statistics/206209/resident-population-in-louisiana/
[37]
Parker, H. (2022) Most of Louisiana’s Waterways Are Polluted. Biggest Reasons? Fertilizer and Sewage. New Orleans Public Radio. https://www.wwno.org/coastal-desk/2022-04-06/most-of-louisianas-waterways-are-polluted-biggest-reasons-fertilizer-and-sewage
[38]
Shanmugam, V., Shanmugam, P. and He, X. (2019) New Algorithm for Computation of the Rayleigh-Scattering Radiance for Remote Sensing of Water Color from Space. OpticsExpress, 27, 30116-30139. https://doi.org/10.1364/oe.27.030116
[39]
Mamun, M., Atique, U. and An, K. (2021) Assessment of Water Quality Based on Trophic Status and Nutrients-Chlorophyll Empirical Models of Different Elevation Reservoirs. Water, 13, Article No. 3640. https://doi.org/10.3390/w13243640
[40]
United States Census Bureau (1999) 1990s: Counties Table.
[41]
Bănăduc, D., Simić, V., Cianfaglione, K., Barinova, S., Afanasyev, S., Öktener, A., et al. (2022) Freshwater as a Sustainable Resource and Generator of Secondary Resources in the 21st Century: Stressors, Threats, Risks, Management and Protection Strategies, and Conservation Approaches. InternationalJournalofEnvironmentalResearchandPublicHealth, 19, Article No. 16570. https://doi.org/10.3390/ijerph192416570
[42]
Boesch, D.F., Brinsfield, R.B. and Magnien, R.E. (2001) Chesapeake Bay Eutrophication: Scientific Understanding, Ecosystem Restoration, and Challenges for Agriculture. JournalofEnvironmentalQuality, 30, 303-320. https://doi.org/10.2134/jeq2001.302303x
[43]
Andrews, E., et al. (2017) The Future of Sea Level Rise. Sea Level Rise Is Speeding up. https://sealevelrise.org/states/louisiana/
[44]
Sani, Z., Tshimanga, R.M., Odume, O.N., Basamba, T.A. and Katshiatshia, H.M. (2024) Developing an Approach for Balancing Water Use and Protecting Water Quality of an Urban River Ecosystem. Physics and Chemistry of the Earth, Parts A/B/C, 136, Article ID: 103687. https://doi.org/10.1016/j.pce.2024.103687
[45]
Lafitte, J. (2022) How Rising Sea Levels Threaten the Lives of Louisiana’s Coastal Residents. https://www.pbs.org/newshour/nation/difficult-conversations-how-rising-sea-levels-threaten-the-lives-of-louisianas-coastal-residents
[46]
Jankowski, K.L., Törnqvist, T.E. and Fernandes, A.M. (2017) Vulnerability of Louisiana’s Coastal Wetlands to Present-Day Rates of Relative Sea-Level Rise. NatureCommunications, 8, Article No. 14792. https://doi.org/10.1038/ncomms14792
[47]
Louisiana Department of Environmental Quality (2022) 2022 Louisiana Water Quality Inventory: Integrated Report (Appendix A-Assessments). https://ldeq.maps.arcgis.com/apps/instant/portfolio/index.html?appid=a689bc37c40848f598a1937d092f63ae%20
[48]
Louisiana Department of Environmental Quality (2022) 2022 Water Quality Inventory Integrated Report (305(b)/303(d)). https://deq.louisiana.gov/page/2022-water-quality-inventory-integrated-report-305b303d
[49]
Southwick, L. (2022) New Report Predicts Significant Sea Level Rise in Louisiana in the Next 30 Years. Wdsu News. https://www.wdsu.com/article/new-report-predicts-significant-sea-level-rise-in-louisiana-in-the-next-30-years/39113179
