Update of the Integrated Water Demand Forecast for the City of Hamburg Until 2045

Abstract

A water demand forecast for the service area of HAMBURG WASSER until the year 2045 is presented. The forecast approach is user group specific and includes spatial analysis. Water consumption data is intersected with geospatial information about aspects of social, economic and settlement structure. Major factors on the specific water demand within the user groups were identified and statistical correlations were used for the calculation of scenarios of water demand. The scenarios were developed according to official population and approved economic forecasts and complementary expert interviews. The forecast model has the form of a spreadsheet with analysis and forecasting functions. It integrates all data and provides a numerical as well as graphical representation of partial and overall results.