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<br />001428 <br /> <br />SECTION III <br /> <br />INPUT DATA <br /> <br />3.1 General Information <br /> <br />This section explains the purpose, preparation, quantity, and <br />format of the input data cards in the CRSM Control Data file. <br />The input data cards in the Demand Input Data file are ex- <br />plained in the Demand Input Data Generation Proqram User's <br />Manual. The input data cards in the Hydrology Input Data file <br />are explained in the Hvdroloqv Input Data Generation Proqram <br />User's Manual. <br /> <br />The CRSM Control and Demand Input Data files are merged by <br />procedure file RUNCRSM before being used by the CRSM program. <br /> <br />Originally data was entered into computer memory from punched <br />data cards; hence the term "card." Presently, the informa- <br />tion is stored as lines of data in computer files (card im- <br />ages). The term "card" is still used throughout the documen- <br />tation and refers to one line of data in the data file. <br /> <br />3.1.1 Data Cards <br /> <br />-' <br /> <br />The data cards are listed and explained in the order of being <br />read by the CRSM program. For each card, a table describes <br />the data contained in the each column of that card. <br /> <br />Appendix C contains a printout of the CRSM Control Data file. <br />3.1.2 General preparation <br /> <br />Real numbers and integers are entered on nearly all of the <br />cards. Integers specifying quantities such as month and <br />year, reach and sequence numbers, and parameter index numbers <br />are not entered with a decimal point. Real numbers specify- <br />ing quantities requiring both an integer and a ,fractional <br />number are entered with, a decimal point. <br /> <br />An integer entered into a field must be right-justified; that <br />is, the rightmost digit of the number must be in the <br />rightmost card column specified for the field. A real number <br />may be entered in either of two ways: if it has a decimal <br />point, the number may reside within the field without regard <br />to location; if the number has no decimal point, then it must <br />be right justified within the field. <br /> <br />A three- to eight-character label, such as CONUSE, titles <br />each card. All card labels are entered in the first six to <br />eight columns. <br /> <br />7 <br />