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1. DATABASE DEVELOPMENT <br />The data-centered architecture recommended for the CRDSS makes the database a critical element of <br />the system. The database will include a relational database management system (RDBMS) and a <br />geographic information system (GIS). The RDBMS will be used to store information suited to tabular <br />formats (e.g., flow records, diversion structure owner), and will interface with the DWR's HYDROBASE <br />which is under development by the DWR. The GIS will allow efficient storage, retrieval, analysis and <br />display of spatial information (e.g. irrigated lands). Irrigated acreage is being delineated on aerial photos <br />by the USBR and field checked by the DWR in a CRDSS related effort. <br />GIS GaaLac <br />Spati~ dB <br />Stream <br />CRDSS DB ! S OVi~ Map <br />mate I I Flaw <br />Field <br />A}c3 e <br />Structure <br />Sd~cn QE <br />Fbnd <br />User dB <br />User <br />Fleaertiuirl I Hesd~7a6e <br />me Series Ti me Series Ti me Series Ti me Series <br />_ Hi storic dB ~ <br />~ ~~`~ .,, <br />T <br />~ ~ ~~~ `+ ~ <br />.^ i a <br />a ~^c`~ <br />{~ ~ , ,_~ <br />~~t~ <br />2. MODELS <br />Computer models enable the simulation of the river system, so that possible alternate management <br />scenarios can be evaluated. Emphasis in the first 2 years will be placed on developing a Colorado River <br />Basin Simulation Model, a Water Resource Planning Model and a Consumptive Use Model. <br />~ ~w <br />