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Improved recipient model with calibration

  • 25 April, 202228 June, 2022

If measured pollutant concentration in the recipient surface water body is specified, the calculated total load on the recipient (Lin) is automatically calibrated against the outgoing load (Lout). Total load on the recipient (Lin) is then assumed equal to the outgoing load from the recipient (Lout). The difference between Lin and Lout entails retention within the catchment area (ditch, watercourse, etc.) and in the recipient, inaccuracies in the mapping of the catchment area and over or underestimation of land use specific typical values and volumetric runoff coefficients. Errors in the mapping of the catchment area can, e.g., be that areas for land use are incorrectly estimated.

By calibrating to the measured concentration in the water body of the recipient, the errors are reduced in estimated total load, acceptable load and required load reduction.

Improved function for calculating distributed acceptable load on recipients
New land use: Permeable pavement

Recent Posts

  • New article: Methods for Calculation of Stormwater Treatment Required for Meeting Receiving Waters Quality: Application in a Case Study 28 November, 2022
  • Updated design runoff coefficients 24 July, 2022
  • Updated typical concentrations for stormwater per land use, as a result of the updated database 28 June, 2022
  • New land use: Permeable pavement 1 June, 2022
  • Improved recipient model with calibration 25 April, 2022
  • Improved function for calculating distributed acceptable load on recipients 25 April, 2022

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recipient stormwater model dimensionering dagvatten

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