WaterMet2 model functional requirements

Abstract

This report specifies the functional requirements of the WaterMet2 Model that will be developed to quantify the generic Urban Water System (UWS) metabolism based performance model in the TRUST project (TRansitions to the Urban water Services of Tomorrow). The report is not a project deliverable but rather a work-in-progress to describe different aspects of the model and its functionality. This report addresses two main parts of the WaterMet2 Model functionality. The first part illustrates principal concepts of WaterMet2 modelling as a mass balance base model. Two main aspects of water modelling (i.e. quantity and quality modelling approaches) are described and analysed first. Modelling of the intended risk analysis as one of the purpose of TRUST project is demonstrated. Then, the spatial and temporal scales of the model are better described as well as a brief description of intervention modelling. Second part of the report presents the specific indicators of the WaterMet2 model in three parts: (1) performance indicators linked to all water related flows in the UWS; (2) risk indicators based on the current data received from WA32; and (3) cost indicators including capital and operational ones. For all introduced indicators, the relevant input data requirements are presented. Finally, the model calibration approach is briefly described. This document is based on the authors' current best understanding of the UWS metabolism concept and the associated performance related issues. Therefore, as WaterMet2 model progresses in more details, information presented in this report is likely to evolve and improve