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OOlGG1_ the output is desired, and the periods. The second part of the TAPEUIT control file is used by the TAPEUIT output program and tells the output program what to do with the data. This part of the file controls the printing, plotting, and manipulation of data and supplies labels for the tables and plots. 6.3 CRSM Output Data There are two sets of output from the CRSM. The first set of output comes directly from the model while the second set of output comes from the TAPEDIT output program (see fig. 3.1). The first set of output, called the CRSM output, coqtains run infor- mation, error messages, debugging information, shortage messages, com- ment messages, and an annual flow and salt summary table. This information is received each time the model is run and is controlled by the CRSM control file. The second set of output contains all the detailed output data from the model. The TAPEOIT output program has the ability to print tables, create plots, and manipulate data like adding and subtracting output data or performing statistical analyses on the data. Data that can be obtained through the TAPEOIT output program includes flow of the river, quality of the river, quantity or quality of inflow, planned or actual diversions, reservoir operation data, powerplant data, planned or actual amounts of consumptive use, and flow-weighted salinity of riverflow. Several of these items are broken down into specific information like monthly reservoir contents, uncontrolled spills, controlled releases, and release salinity concentrations. Details on the TAPEOIT output program and TAPEDIT control file are given in the TAPEDIT User's Manual. 6.4 General Flowchart of the CRSM The general flowchart in figure 6.1 illustrates the basic logic of the model. The flowchart includes the three major subroutines that are used in the model during each month of simulation: SURPLUS, HYDRBAL, AND RSALT. Each of these subroutines in turn calls other subroutines, not shown on the figure, to perform its basic function. Subroutine SURPLUS is the part of the model that incorporates opera- tional strategies and "Laws of the River." In determining monthly releases from Lakes Powell and Mead, subroutine SURPLUS uses forecast procedures, strategies to distribute surplus water or shortages, minimum de 1 i very requi rements, mi ni mum storage relju i r'~'nents, reservoi r ba 1 anci ng, and flood control regul at ions. Each of these items is discussed individually in sections 7 and 8. Subroutine HYDRBAL routes the water through the system. This subroutine handles inflows, return inf10ws, deliveries, reservoir operations, and power generation. Each of these items is discussed individually in sec- tions 7, 9, and 11. 26