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<br />is physically and legally available in excess of the current demand. Water will be taken from <br />storage according to rules specified by the user to meet obligations or demands. <br /> <br />Demand Model Spreadsheet <br /> <br />This module will use information on the relevant predictive parameters (for example, <br />income, land use, family size, population, water cost, etc) to estimate disaggregated monthly <br />water demand. It will be calibrated by comparison to historical demand data. Once cali- <br />brated the demand module can be used to predict future system demands based on the best <br />estimates of future conditions. The model will allow the effects of rate changes and other <br />economic parameters to be computed. <br /> <br />The demand module will include the best available information on the impacts of various <br />water conservation measures on water demands. This will permit the entity to establish <br />which types of conservation measures are best suited for their specific system. Both <br />structural and non-structural measures will be included in the list of choices available to the <br />user. Results from the CWCB pilot studies and other relevant studies will be included as <br />they become available. <br /> <br />As you know, the US Army Corp of Engineers, Institute for Water Resources has spent <br />considerable time in creation of a demand forecasting model, known as IWR Main. this <br />model provides for long term projections of municipal demands based on summer/winter <br />water supply operations. As part of our proposed project we will investigate the degree to <br />which the IWR Main program may be applicable to the overall modelling effort. We will <br />incorporate the IWR Main program in the most advantageous manner, whether this is as <br />direct part of the model,.or as useful adjunct for preprocessing of water demands. <br /> <br />12 <br />