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An Analysis on the First Flush Phenomenon by Stormwater Runoff inEutrophic Lake Watershed

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2007, 16(5), pp.341-350
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering

CHO JAE HEON 1 서형준 1

1관동대학교

Accredited

ABSTRACT

Lake Youngrang is a lagoon whose effluent flows into the East Sea. Because two resort townsand two golf courses are situated at the lake basin, many tourists visit this area. Stormwaterrunoff surveys were carried out for the eight storm events from 2004 to 2005 in the eutrophiclake watershed to give a basic data for the diffuse pollution control of the lake. Dimensionlessmass-volume curves indicating the distribution of pollutant mass vs. volume were used toanalyze the first flush phenomenon. The mass-volume curves were fitted with a power functionand polynomial equation curves. The regression analysis showed that the polynomial equationcurves were better than the power function in representing the tendency of the first flush, and second degree polynomial equation curves indicated the strength of the first flush effectively.

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