The main technical contents of this code include: collectionand analysis of basic data, analysis of multipurpose requirements anddetermination of project objectives, analysis of power supply area and powermarket, power system load-resource balance, analysisof project developmentnecessity, comparison of alternatives, selection of characteristic water level,installed capacity selection, comparison of turbine types and numbers,selection of turbine rated head, economic comparison of waterway dimension,initial reservoirfilling plan, and determination of reservoir and powerstation operation patterns.