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<br />so <br /> <br />. <br /> <br />the stream thalweg. <br /> <br />follows: <br /> <br />Data entry by card column number is as <br /> <br />Columns 4-39: <br /> <br />Any combination of letters and digits to <br /> <br />identify the stream. <br /> <br />Columns 41-44: Elevation increments for computation of cross- <br /> <br />J1 <br /> <br />i <br /> <br /> sectional properties (F4.2) <br />Columns 45-48: Required accuracy in solution (F4.2) <br />Columns 49-52: Allowable Froude number (F4.2) <br />Columns 53-56: Value of C (F4.2) <br /> s <br />Columns 57-60: Value of m (F4.2) <br />Columns 61-66: Number of the initial station (F7.0) <br /> <br />. <br /> <br />, <br /> <br />Columns 80: Card Type = 1 (11) <br />Only one card type 1 is required per reach of stream for which the <br /> <br />water surface profile is desired. <br /> <br />2) Card Type (2) is a cross-sectional data card. Each card shows <br />the station along the thalweg, followed by six pairs of cross- <br />sectional data for distance and ground elevation. Cross-sectional <br />data should be referenced to the left bank of the stream. A check <br /> <br />is also provided to control the reading of roughness cards (type 3). <br /> <br />Card 2 data entry by column is as follows: <br /> <br />Columns 4-10: Thalweg station (it) (F7.0) <br />Columns 11-70: Six sets of cross-sectional grid points <br />(horizontal distance, ground elevation) (ft) <br />(12F5.l) <br /> <br />. <br /> <br />. <br /> <br />Column 71: <br /> <br />NCHECK; if a roughness card follows, any <br /> <br />nonzero digit should be punched. (11) <br />Card Type = 2(Il) <br /> <br />. <br /> <br />Column 80: <br />