Table 3 only presents the parameter importance for the CDD watershed using the NSE. However, all the above procedures were applied to both watersheds and for both efficiency metrics. Table 4 presents the selection ratios and classes of importance for the four considered combinations. A first examination of Table 4 reveals that five parameters (P1, P3, P5, P13, and P22) were consistently identified as the most important in all four cases. At the other end of the spectrum, parameters P7 and P9 were the least important for all cases. The importance of each parameter can be ordered according to the summation of selection ratios for both watersheds and efficiency metrics (the last row in Table 4).

Table 4

Selection ratio for parameters being important for eight MOGA optimizations using the NSE and TRMSE for both watersheds

WatershedMetricP1P2P3P4P5P6P7P8P9P10P11P12P13P14P15P16P17P18P19P20P21P22P23
CDD NSE 0.69 0.25 0.63 0.53 0.48 0.61 0.09 0.58 0.05 0.14 0.34 0.26 0.51 0.27 0.34 0.18 0.11 0.28 0.69 0.64 0.33 0.66 0.19
TRMSE 0.71 0.34 0.73 0.67 0.54 0.31 0.13 0.39 0.03 0.19 0.19 0.35 0.41 0.51 0.38 0.12 0.48 0.49 0.59 0.26 0.50 0.62 0.09
Cowansville NSE 0.72 0.19 0.55 0.70 0.73 0.31 0.08 0.52 0.06 0.41 0.69 0.52 0.60 0.03 0.59 0.30 0.10 0.18 0.31 0.19 0.09 0.53 0.07
TRMSE 0.57 0.31 0.63 0.32 0.51 0.40 0.04 0.38 0.05 0.29 0.59 0.67 0.44 0.06 0.79 0.06 0.04 0.42 0.37 0.44 0.33 0.44 0.26
Sum 2.68 1.09 2.53 2.22 2.26 1.64 0.34 1.87 0.18 1.03 1.81 1.80 1.97 0.87 2.10 0.67 0.73 1.37 1.96 1.53 1.25 2.25 0.61
Order 16 12 22 23 17 10 11 18 20 19 14 13 15 21
WatershedMetricP1P2P3P4P5P6P7P8P9P10P11P12P13P14P15P16P17P18P19P20P21P22P23
CDD NSE 0.69 0.25 0.63 0.53 0.48 0.61 0.09 0.58 0.05 0.14 0.34 0.26 0.51 0.27 0.34 0.18 0.11 0.28 0.69 0.64 0.33 0.66 0.19
TRMSE 0.71 0.34 0.73 0.67 0.54 0.31 0.13 0.39 0.03 0.19 0.19 0.35 0.41 0.51 0.38 0.12 0.48 0.49 0.59 0.26 0.50 0.62 0.09
Cowansville NSE 0.72 0.19 0.55 0.70 0.73 0.31 0.08 0.52 0.06 0.41 0.69 0.52 0.60 0.03 0.59 0.30 0.10 0.18 0.31 0.19 0.09 0.53 0.07
TRMSE 0.57 0.31 0.63 0.32 0.51 0.40 0.04 0.38 0.05 0.29 0.59 0.67 0.44 0.06 0.79 0.06 0.04 0.42 0.37 0.44 0.33 0.44 0.26
Sum 2.68 1.09 2.53 2.22 2.26 1.64 0.34 1.87 0.18 1.03 1.81 1.80 1.97 0.87 2.10 0.67 0.73 1.37 1.96 1.53 1.25 2.25 0.61
Order 16 12 22 23 17 10 11 18 20 19 14 13 15 21

Note: Roman, italic, bold, and underline denote the most important, important, average, and least important, respectively.

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