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<br />" <br /> <br />HEC-l INPUT DESCRIPTION <br />BASIN RUNOFF DATA (B Cards) <br /> <br />6 BASIN RUNOFF DATA (B - Cards) <br /> <br />These cards are required for direct input of a hydrograph or for <br />computing runoff from precipitation on a basin/subbasin. <br /> <br />.j <br /> <br />.. <br /> <br />6.1 BA CARD - SUBBASIN AREA <br /> <br />Required for subbasin runoff computation or direct input of a <br />hydrograph ,on QI cards. If QI cards are used, they should follow the BA <br />card and an IN card if necessary. The next hydrograph computation <br />specification card (KK) should follow the last QI card. <br /> <br />FIELD VARIABLE <br /> <br />VALUE <br /> <br />DESCRIPTION <br /> <br />Col 1+2 ID <br /> <br />BA <br /> <br />Card identification. <br /> <br />1 TAREA <br /> <br />+ <br /> <br />Drainage area in square miles (sq km). <br /> <br />2 <br /> <br />SNAP <br /> <br />+ <br /> <br />Normal annual precipitation for the drainage <br />area above. Will be overridden by computed <br />normal annual for snowmelt zone, if used. <br /> <br />o or <br />Blank <br /> <br />Weighting by basin normal annual <br />precipitation will not be performed. <br /> <br />{ i <br /> <br />~ <br /> <br />Page 21 <br />