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A Flood Study of Three Urban Catchments Near Sydney

MC Bufill, MJ Boyd

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Abstract

Rainfall losses and runoff hydrographs have been studied for three urban catchments near Sydney. Analysis of the losses and the hydrograph recessions allows identification of events consisting solely of impervious runoff, and events with both pervious and impervious runoff. A proportional loss model combined with a two parallel reservoir model, with parameters determined from hydrograph recessions, has been found to give good reproduction of recorded hydrographs.

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What this paper is about

Rainfall losses and runoff hydrographs have been studied for three urban catchments near Sydney. Analysis of the losses and the hydrograph recessions allows identification of events consisting solely of impervious runoff, and events with both pervious and impervious runoff. A proportional loss model combined with a two parallel reservoir model, with parameters determined from hydrograph recessions, has been found to give good reproduction of recorded hydrographs.

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Available abstract

Rainfall losses and runoff hydrographs have been studied for three urban catchments near Sydney. Analysis of the losses and the hydrograph recessions allows identification of events consisting solely of impervious runoff, and events with both pervious and impervious runoff. A proportional loss model combined with a two parallel reservoir model, with parameters determined from hydrograph recessions, has been found to give good reproduction of recorded hydrographs.

Key concepts: Hydrograph, Impervious surface, Surface runoff, Hydrology (agriculture), Environmental science, Flood myth, Runoff model, Meteorology

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