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<br />00'14 23 <br /> <br />II <br /> <br />RON <br /> <br />II <br /> <br />3.2 RON <br /> <br />The RUN card provides run parameters such as the beginning <br />month and year and the ending month and year of the run, the <br />beginning year of the hydrology, the number of years to in- <br />crement the hydrology for multitrace runs, the number of <br />traces, the year to terminate growth in demands, and the year <br />to begin hydrology wraparound. <br /> <br />3.2.1 preparation <br /> <br />The first four items on the card specify the start and end of <br />a run. The beginning and ending months are entered as <br />two-digit numbers representing the month, i.e., January = 01, <br />December = 12. The beginning and ending years are entered as <br />four-digit numbers, i.e., 1986 = 1986, 2040 = 2040. A run <br />cannot start before 1960. The length of a run cannot exceed <br />lS0 years. <br /> <br />The fifth item "beginning year of first hydrologic trace" po- <br />sitions the hydrology input file to the year indicated, prior <br />to starting the simulation. <br /> <br />The sixth item "the number of years between the start of each <br />new hydrologic trace" is used when more than one hydrologic <br />trace is applied in a run. For example, in a 14-trace run <br />with a 1982 beginning year, a 2032 ending year, a beginning <br />hydrology year of 1906, and a s-year increment, the beginning <br />hydrology years would be 1982 = 1906, 1982 = 1911, 1982 = <br />1916, etc., until the 14th trace begins with 1982 = 1971. <br />Wraparound occurs when the last year of hydrologic data is <br />read from the input file and the trace is not complete. The <br />input file is rewound and reading resumes at year 1906 unless <br />otherwise specified on the RUN card. <br /> <br />The seventh item "the number of traces II 'sets the number of <br />traces in the run. This number will be greater than 1 if the <br />run is a either a multiple hydrology run (RUN card) or a mul- <br />tiple surplus operating strategy run (SURPLUS card). <br /> <br />The field specifying the year that terminates growth in the <br />demands is generally left blank, but some special consider- <br />ations may require the demands to have zero growth beyond a <br />particular year. <br /> <br />The last item is the year to begin reading after rewinding <br />the hydrology input file, when wraparound occurs. For this <br />option to work, strategy option No. 4 on the SPECIAL card <br />must be set to 1, otherwise the beginning of the file, which <br />begins with water year 1906, will be used. <br /> <br />-J <br /> <br />8 <br />