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Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK

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DOI: 10.4236/jwarp.2014.615128    3,160 Downloads   3,509 Views  

ABSTRACT

In recent years, there has been growing concern about the impact of diffuse source pollution on water bodies, particularly due to associated health risks. Coastal waters can receive considerable inputs of pollutants from catchments since they serve as sinks for many diffuse pollutants. Furthermore, bathing waters have in the recent past often failed to comply with the various standards set by different bathing water directives. The Severn estuary has recently attracted a lot of attention in terms of bathing water compliance due to its potential to generate a considerable amount of renewable energy for the UK. It is against this background that a physical model of the estuary has been set up in the Hydraulics Laboratory at Cardiff University, for studies to be undertaken to mimic the conditions of the prototype. A sandbox filled with non-cohesive sediments within the laboratory has been set up to investigate the behaviour of pollutants in propagating from the idealised groundwater environment into the estuarine waters. It has been demonstrated that for a semi-diurnal tidal estuary like the Severn, tides have a lesser effect on the transport of solutes than flows from the catchments. Thus the impact of pollution from diffuse sources to marine environments from catchments could be higher in less tidally dominated coastal waters than a tidal one.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Osei-Twumasi, A. and Falconer, R. (2014) Diffuse Source Pollution Studies in a Physical Model of the Severn Estuary, UK. Journal of Water Resource and Protection, 6, 1390-1403. doi: 10.4236/jwarp.2014.615128.

References

[1] Schnauder, I., Bockelmann-Evans, B. and Lin, B. (2007) Modelling Faecal Bacteria Pathways in Receiving Waters. Proceedings of the Institution of Civil Engineers, Maritime Engineering, 160, 143-153.
http://dx.doi.org/10.1680/maen.2007.160.4.143
[2] Kay, D., Crowther, J., Stapleton, C.M., Wyer, M.D., Fewtrell, L., Anthony, S., et al. (2008) Faecal Indicator Organism Concentrations and Catchment Export Coefficients in the UK. Water Research, 42, 2649-2661.
http://dx.doi.org/10.1016/j.watres.2008.01.017
[3] Fayer, R. and Trout, J.M. (2005) Zoonotic Protists in the Marine Environment. In: Belkin, S.S. and Cowell, R., Eds., Oceans and Health: Pathogens in Marine Environment, Kluwer Academic Publishers, Dordrecht, 143-163.
[4] Pachepsky, Y.A., Sadeghi, A.M., Bradford, S.A., Shelton, D.R., Guber, A.K. and Dao, T. (2006) Transport and Fate of Manure-Borne Pathogens: Modeling Perspective. Agricultural Water Management, 86, 81-92.
http://dx.doi.org/10.1016/j.agwat.2006.06.010
[5] Cotruvo, J.A., Dufour, A., Rees, G., Bartram, J., Carr, R., Cliver, D.O., et al., Eds. (2004) Waterborne Zoonoses: Identification, Causes and Control. IWA Publishing, London.
[6] Danon-Schaffer, M.N. (2001) Walkerton’s Contaminated Water Supply System: A Forensic Approach to Identifying the Source. Environmental Forensics, 2, 197-200.
http://dx.doi.org/10.1006/enfo.2001.0054
[7] Holme, R. (2003) Drinking Water Contamination in Walkerton, Ontario: Positive Resolutions from a Tragic Event. Water Science and Technology, 47, 1-6.
[8] Auld, H., MacIver, D. and Klaassen, J. (2004) Heavy Rainfall and Waterborne Disease Outbreaks: The Walkerton Example. Journal of Toxicology and Environmental Health Part A, 67, 1879-1887.
http://dx.doi.org/10.1080/15287390490493475
[9] Kay, D., Edwards, A.C., Ferrier, R.C., Francis, C., Kay, C., Rushby, L., et al. (2007) Catchment Microbial Dynamics: The Emergence of a Research Agenda. Progress in Physical Geography, 31, 59-76.
http://dx.doi.org/10.1177/0309133307073882
[10] Bruce, M.G., Curtis, M.B., Payne, M.M., Gautom, R.K., Thompson, E.C., Bennett, A.L. and Kobayashi, J.M. (2003) Lake-Associated Outbreak of Escherichia coli O157:H7 in Clark County, Washington, August 1999. Archives of Pediatric and Adolescent Medicine, 157, 1016-1021.
http://dx.doi.org/10.1001/archpedi.157.10.1016
[11] Ogden, I.D., Hepburn, N.F., MacRae, M., Strachan, N.J.C., Fenlon, D.R., Rusbridge, S.M. and Pennington, T.H. (2002) Long-Term Survival of Escherichia coli O157 on Pasture Following an Outbreak Associated with Sheep at a Scout Camp. Letters in Applied Microbiology, 34, 100-104.
http://dx.doi.org/10.1046/j.1472-765x.2002.01052.x
[12] Castor, M.L. and Beach, M.J. (2004) Reducing Illness Transmission from Disinfected Recreational Water Venues: Swimming, Diarrhea and the Emergence of a New Public Health Concern. Pediatric Infectious Diseases Journal, 23, 866-870.
http://dx.doi.org/10.1097/01.inf.0000138081.84891.30
[13] Lim, L.S., Varkey, P., Giesen, P. and Edmonson, L. (2004) Cryptosporidiosis Outbreak in a Recreational Swimming Pool in Minnesota. Journal of Environmental Health, 67, 16-20.
[14] Hoebe, C., Vennema, H., Husman, A.M.D. and van Duynhoven, Y. (2004) Norovirus Outbreak among Primary Schoolchildren Who Had Played in a Recreational Water Fountain. Journal of Infectious Diseases, 189, 699-705.
http://dx.doi.org/10.1086/381534
[15] EPA (2004) Potential Environmental Impacts of Animal Feeding Operations.
http://www.epa.gov/agriculture/ag101/impacts.html
[16] Earle, J.R. (2003) The Three Rivers Project—Water Quality Monitoring and Management Systems in the Boyne, Liffey and Suir Catchments in Ireland. Water Science and Technology, 47, 217-225.
[17] Environment Agency (2007) The Unseen Threat to Water Quality. Diffuse Water Pollution in England and Wales Report. Environment Agency, Bristol.
[18] He, L.M. and He, Z.L. (2008) Water Quality Prediction of Marine Recreational Beaches Receiving Watershed Baseflow and Stormwater Runoff in Southern California, USA. Water Research, 42, 2563-2573.
http://dx.doi.org/10.1016/j.watres.2008.01.002
[19] Steets, B.M. and Holden, P.A. (2003) A Mechanistic Model of Runoff Associated Fecal Coliform Fate and Transport through a Coastal Lagoon. Water Research, 37, 589-608.
http://dx.doi.org/10.1016/S0043-1354(02)00312-3
[20] Carroll, S.P., Dawes, L., Hargreaves, M. and Goonetilleke, A. (2009) Faecal Pollution Source Identification in an Urbanising Catchment Using Antibiotic Resistance Profiling, Discriminant Analysis and Partial Least Squares Regression. Water Research, 43, 1237-1246.
http://dx.doi.org/10.1016/j.watres.2008.12.017
[21] Sinclair, A., Hebb, D., Jamieson, R., Gordon, R., Benedict, K., Fuller, K., Stratton, G.W. and Madani, A. (2009) Growing Season Surface Water Loading of Fecal Indicator Organisms within a Rural Watershed. Water Research, 43, 1199-1206.
http://dx.doi.org/10.1016/j.watres.2008.12.006
[22] Ferguson, C., Husman, A., Altavilla, N., Deere, D. and Ashbolt, N. (2003) Fate and Transport of Surface Water Pathogens in Watersheds. Critical Reviews in Environmental Science and Technology, 33, 299-361.
http://dx.doi.org/10.1080/10643380390814497
[23] Haydon, S. and Deletic, A. (2009) Model Output Uncertainty of a Coupled Pathogen Indicator-Hydrologic Catchment Model Due to Input Data Uncertainty. Environmental Modelling & Software, 24, 322-328.
http://dx.doi.org/10.1016/j.envsoft.2008.09.004
[24] Crowther, J., Kay, D. and Wyer, M.D. (2002) Faecal-Indicator Concentrations in Waters Draining Lowland Pastoral Catchments in the UK: Relationships with Land Use and Farming Practices. Water Research, 36, 1725-1734.
http://dx.doi.org/10.1016/S0043-1354(01)00394-3
[25] Crowther, J., Wyer, M.D., Bradford, M., Kay, D. and Francis, C.A. (2003) Modelling Faecal Indicator Concentrations in Large Rural Catchments Using Land Use and Topographic Data. Journal of Applied Microbiology, 94, 962-973.
http://dx.doi.org/10.1046/j.1365-2672.2003.01877.x
[26] Kay, D., Wyer, M.D., Crowther, J., Stapleton, C.M., Bradford, M., McDonald, A.T., et al. (2005) Predicting Faecal Indicator Fluxes Using Digital Land Use Data in the UK’s Sentinel Water Framework Directive Catchment: The Ribble Study. Water Research, 39, 3967-3981.
http://dx.doi.org/10.1016/j.watres.2005.07.006
[27] Yuan, D., Lin, B., Falconer, R.A. and Tao, J. (2007) Development of an Integrated Model for Assessing the Impact of Diffuse and Point Source Pollution on Coastal Waters. Environmental Modelling & Software, 22, 871-879.
http://dx.doi.org/10.1016/j.envsoft.2006.05.010
[28] Kashefipour, S.M., Lin, B., Harris, E.L. and Falconer, R.A. (2002) Hydro-Environmental Modelling for Bathing Water Compliance of an Estuarine Basin. Water Research, 36, 1854-1868.
http://dx.doi.org/10.1016/S0043-1354(01)00396-7
[29] Jamieson, R., Gordon, R., Joy, D. and Lee, H. (2004) Assessing Microbial Pollution of Rural Surface Waters: A Review of Current Watershed Scale Modeling Approaches. Agricultural Water Management, 70, 1-17.
http://dx.doi.org/10.1016/j.agwat.2004.05.006
[30] Ebrahimi, K. (2004) Development of an Integrated Free Surface and Groundwater Flow Model. Ph.D. Thesis, Cardiff University, Cardiff.
[31] Kay, D., Aitken, M., Crowther, J., Dickson, I., Edwards, A.C., Francis, C., et al. (2007) Reducing Fluxes of Faecal Indicator Compliance Parameters to Bathing Waters from Diffuse Agricultural Sources: The Brighouse Bay Study, Scotland. Environmental Pollution, 147, 138-149.
http://dx.doi.org/10.1016/j.envpol.2006.08.019
[32] Traini, C., Menier, D. and Proust, J.N. (2008) The Vilaine River Estuary in the Bay of Biscay: Insight into Geomorphologic Controls on Estuarine Sedimentation. EGU General Assembly, Geophysical Research Abstracts, Vol. 10, EGU2008-A-05586.
[33] Manoj, N.T. (2008) Numerical Modelling of Tidal Circulation and Studies on Salinity Distribution in Mandovi and Zuari Estuaries. Ph.D. Thesis, Goa University, Goa.
[34] Martin, J.L. and McCutcheon, S. (1999) Hydrodynamics and Transport for Water Quality Modeling. CRC Press, Inc., Florida.
[35] Jiang, J.X. and Falconer, R.A. (1983) On the Tidal Exchange Characteristics of Model Rectangular Harbours. Proceedings of the Institution of Civil Engineers, Part 2, Research and Theory, 75, 475-489.
http://dx.doi.org/10.1680/iicep.1983.1441
[36] Turner_Designs (2006) Application Support Bulletin 103: Fluorescein and a Fluorometer.
http://www.turnerdesigns.com/t2/doc/appnotes/998_5103.html
[37] Turner_Designs (2006) Application Support Bulletin 104: Fluorescent Tracer Dyes.
http://www.turnerdesigns.com/t2/doc/appnotes/998_5104.html
[38] Mantovanelli, A., Marone, E., da Silva, E.T., Lautert, L.F., Klingenfuss, M.S., Prata Jr., V.P., et al. (2004) Combined Tidal Velocity and Duration Asymmetries as a Determinant of Water Transport and Residual Flow in Paranagua Bay Estuary. Estuarine, Coastal and Shelf Science, 59, 523-537.
http://dx.doi.org/10.1016/j.ecss.2003.09.001
[39] Robinson, C., Li, L. and Barry, D.A. (2007) Effect of Tidal Forcing on a Subterranean Estuary. Advances in Water Resources, 30, 851-865.
http://dx.doi.org/10.1016/j.advwatres.2006.07.006

  
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