Mapping hazard from urban non-point pollution: A screening model to support sustainable urban drainage planning

Article English OPEN
Mitchell, G. (2005)
  • Publisher: Elsevier Science

Non-point sources of pollution are difficult to identify and control, and are one of the main reasons that urban rivers fail to reach the water quality objectives set for them. Whilst sustainable drainage systems (SuDS) are available to help combat this diffuse pollution, they are mostly installed in areas of new urban development. However, SuDS must also be installed in existing built areas if diffuse loadings are to be reduced. Advice on where best to locate SuDS within existing built areas is limited, hence a semi-distributed stochastic GIS-model was developed to map small-area basin-wide loadings of 18 key stormwater pollutants. Load maps are combined with information on surface water quality objectives to permit mapping of diffuse pollution hazard to beneficial uses of receiving waters. The model thus aids SuDS planning and strategic management of urban diffuse pollution. The identification of diffuse emission ‘hotspots’ within a water quality objectives framework is consistent with the ‘combined’ (risk assessment) approach to pollution control advocated by the EU Water Framework Directive.
  • References (4)

    Anon, 1999. SURPOP V2.0. MIMAS (

    Brown, R.G., 1987. Comparison of five methods used to calculate annual or seasonal surface water loading. In: Nix, S. and Black, P. E. (Eds.), Symposium on monitoring, modelling and mediating water quality, 303-312.

    Chandler, R.D., 1994. Estimating annual urban nonpoint pollutant loads. Journal of Management in Engineering, 10 (6), 50-59.

    Charbeneau, R. J. and Barrett, M.E., 1998. Evaluation of methods for estimating stormwater pollutant loads. Water Environment Research, 70 (7), 1295-1302.

  • Metrics
    No metrics available
Share - Bookmark