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The output from the WSEI4S program gives an estimated WSE and discharge for each transect at measured flows (Tables 8 and 9). The accuracy of the model predictions is evaluated by the ratio between the measured and predicted discharge. In this analysis ratios range from 0.94 to 1.01 for all transects and measured discharges except one. At transect 1, the ratio between the predicted (6330 cfs) and measured discharge (5553 cfs) is 0.88. This discrepancy is the result of pooled water at transect 1 which artif icially raises the WSE. Thus, to facilitate calibration, a lower WSE of 88.66 (the calibrated WSE; Table 8) versus 88.99 was entered in the WSEI4S program. This elevation increased the ratio at transect 1 from 0.88 to 0.96 resulting in a predicted discharge of 5789 cfs (Table 10). Similar to the WSEI4S program, the precision of the model outputs in the IF'G4 program are determined by the ratio between measured and predicted discharges. Fortunately, all the ratios from the IFG4 simulation range from 1.02 to 1°.06 (Table 11). Table 8. Measured versus predicted Water Surface Elevations (WSE) for the measured flows at Ruple Ranch study site. 1194 cfs Meas. Pred. Transect WSE 2589 cfs 5553 cfs Meas. Pred. Meas. Pred. WJL~ WSE 9586 cfs Meas. Pred. WSE 1 85.82 85.83 87.09 87.11 88.99 88.66 89.76 90.04 2 85.87 85.87 87.18 87.21 89.14 89.08 90.87 90.96 3 86.12 86.09 87.33 87.42 89.27 89.25 91.04 91.04 4 86.23 86.20 87.49 87.58 89.55 89.45 91.25 91.30 5 86.26 86.29 87.63 87.60 89.66 89.51 91.29 91.50 6 86.58 86.58 87.90 87.90 89.91 89.77 91.62 91.67 28 ~~ \