Author(s)

J.F. Ferreira da Silva, N. Haie & J.M.P. Vieira

Abstract

Decision support models in water supply systems planning J.F. Ferreira da Silva, N. Haie, J.M.P. Vieira Departamento de Eng. Civil, Universidade do Minho, 4800 Guimaraes, Portugal ABSTRACT In this work, the theory of time series in the analysis of water consumption was applied. The study was developed using forecasting (short term) SARIMA models. Then was applied to characterise the consumption of the distribution network served by the reservoir of Urgeses in the city of Guimaraes. The characterisation is basically done through the study of the peak factor and the definition of the chronological diagrams of flow. To project (long term) the consumption, a computer program was developed and applied for the cascade models which decomposes the consumption into different components to be analysed. These are the annual trend, seasonality, autocorrelation and climatic correlation. INTRODUCTION In today's world one billion (1 000 000 000) people do not have access to clean water

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