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<br />HEC-l INPUT DESCRIPTION <br />HYDROGRAPH TRANSFORMATION (H Cards) <br /> <br />8 HYDROGRAPH TRANSFORMATION (H Cards) <br /> <br />These cards describe operations which combine or reshape hydrographs. <br /> <br />~ <br /> <br />8.1 HB CARD - HYDROGRAPH BALANCE <br /> <br />This card is required only if it is desired to balance the current <br />hydrograph according to these specified volumes/durations. <br /> <br />FIELD VARIABLE <br /> <br />VALUE <br /> <br />DESCRIPTION <br /> <br />COl 1+2 ID <br /> <br />HB <br /> <br />Card identification. <br /> <br />1 NQB (1) <br /> <br />+ <br /> <br />Number of ordinates to be included in the <br />shortest duration. <br /> <br />2 SUMB(l) <br /> <br />+ <br /> <br />Sum of flows corresponding to duration <br />NQB(l) shortest duration. <br /> <br />3 NQB(2) <br /> <br />+ <br /> <br />Number of ordinates for the next larger <br />duration (including the prior duration). <br /> <br />4 <br /> <br />SUMB(2) <br /> <br />+ <br /> <br />Sum of flows corresponding to duration <br />NQB(2) . <br /> <br />-~ <br /> <br />5-10 <br /> <br />Pairs of numbers and sums, up to five <br />durations. <br /> <br />. <br /> <br />Page 29 <br />