6533b857fe1ef96bd12b4f72

RESEARCH PRODUCT

Uncertainty assessment of an integrated urban drainage model

Gabriele FreniGiorgio ManninaGaspare Viviani

subject

Hydrologygeographygeography.geographical_feature_categorySettore ICAR/03 - Ingegneria Sanitaria-AmbientaleSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaDrainage basinCivil engineeringIntegrated urban drainage modelling Environmental water quality management Pollution evaluation Uncertainty analysisHydrology (agriculture)Water Framework DirectiveUrban planningDrainage system (geomorphology)Environmental scienceSanitary sewerDrainageUncertainty analysisWater Science and Technology

description

Over the last few years, the use of mathematical models has gained importance in urban drainage system management; indeed, such models enable the combined analysis of different components that constitute a drainage system; the sewer system, wastewater treatment plant and the receiving water body. The effectiveness of an integrated approach has been widely demonstrated in the past and is presented in the EU Water Framework Directive, which also introduces a new point of view regarding the water quality management of the whole system, requiring a global analysis at the river basin scale for pollutant sources. However, integrated urban drainage models introduce several uncertain factors that are due to the high complexity level of the adopted approaches as well as to the lack of data for a robust model calibration. This paper presents the uncertainty assessment of an integrated urban drainage model developed in previous studies by means of the Generalized Likelihood Uncertainty Estimation methodology. The analysis has been applied to an experimental catchment in Bologna (Italy) which covers a part of the Bologna sewer network and a reach of the Savena River.

https://doi.org/10.1016/j.jhydrol.2009.04.037