Erratum for “Improved Methods of Parameterization for Estimating the Magnitude and Frequency of Peak Discharges in Rural Ungaged Streams” by C. C. Hodges, W. M. McDonald, R. L. Dymond, and K. L. Hancock
Return period | Comprehensive analysis | Drainage area only | ||||||
---|---|---|---|---|---|---|---|---|
Sp (%) | Pseudo- | SME (%) | Equations | Sp (%) | Pseudo- | SME (%) | Equations | |
2 year | 29.86 | 97.77 | 28.76 | 38.39 | 96.29 | 37.63 | ||
5 year | 33.96 | 96.96 | 32.64 | 40.17 | 95.7 | 39.28 | ||
10 year | 39.19 | 95.85 | 37.66 | 42.32 | 95.09 | 41.3 | ||
25 year | 45.11 | 94.4 | 43.3 | 47.75 | 93.67 | 46.59 | ||
50 year | 45.59 | 93.19 | 47.55 | 52 | 92.37 | 50.65 | ||
100 year | 55.59 | 91.34 | 53.65 | 56.12 | 91.09 | 54.62 | ||
200 year | 60.73 | 89.74 | 58.56 | 62.09 | 89.17 | 60.43 | ||
500 year | 67.83 | 87.46 | 65.37 | 69.05 | 86.88 | 67.16 |
Note: DA = drainage area (); FSl = focal slope (); ME = mean elevation (m); SME = standard model error; Sp = average standard error of prediction; Sp, Pseudo-, and SME are computed using Log10(Peak); Peak flows given in .
Return period | Comprehensive analysis | Drainage area only | ||||||
---|---|---|---|---|---|---|---|---|
Sp (%) | Pseudo- | SME (%) | Equations | Sp (%) | Pseudo- | SME (%) | Equations | |
2 year | 38.17 | 89.66 | 34.95 | 55.19 | 77.66 | 53.03 | ||
5 year | 44.27 | 86.67 | 40.41 | 59.19 | 75.27 | 56.65 | ||
10 year | 51.98 | 82.79 | 47.33 | 64.85 | 72.02 | 61.87 | ||
25 year | 67.14 | 73.46 | 62.88 | 74.14 | 67.24 | 70.48 | ||
50 year | 74.12 | 70.54 | 69.24 | 82.16 | 63.48 | 77.92 | ||
100 year | 82.21 | 67.43 | 76.6 | 90.59 | 60.12 | 85.71 | ||
200 year | 91.08 | 64.27 | 84.64 | 99.9 | 56.8 | 94.29 | ||
500 year | 104.1 | 60.29 | 96.4 | 113.7 | 52.54 | 107 |
Note: CN = curve number; DA = drainage area (); FSl = focal slope (); ME = mean elevation (m); SME = standard model error; Sp = average standard error of prediction; Sp, Pseudo-, and SME are computed using Log10(Peak); Peak flows given in .
Return period | Comprehensive analysis | Drainage area only | ||||||
---|---|---|---|---|---|---|---|---|
Sp (%) | Pseudo- | SME (%) | Equations | Sp (%) | Pseudo- | SME (%) | Equations | |
2 year | 19.06 | 96.39 | 17.79 | 23.8 | 93.92 | 23.08 | ||
5 year | 20.38 | 95.82 | 18.88 | 25.35 | 92.86 | 24.81 | ||
10 year | 22.38 | 95.02 | 20.65 | 28.5 | 91.27 | 27.54 | ||
25 year | 26.07 | 93.42 | 24.04 | 32.71 | 88.78 | 31.58 | ||
50 year | 28.6 | 92.27 | 26.34 | 36.36 | 86.49 | 35.11 | ||
100 year | 31.6 | 90.81 | 29.12 | 40.41 | 83.86 | 39.04 | ||
200 year | 35.07 | 89.04 | 32.36 | 44.55 | 81.18 | 43.05 | ||
500 year | 40.19 | 86.1 | 37.55 | 50.28 | 77.41 | 48.6 |
Note: DA = drainage area (); FSl = focal slope (); ME = mean elevation (m); MTt = mean travel time (min); SME = standard model error; Sp = average standard error of prediction; Sp, Pseudo-, and SME are computed using Log10(Peak); Peak flows given in .
Return period | Comprehensive analysis | Drainage area only | ||||||
---|---|---|---|---|---|---|---|---|
Sp (%) | Pseudo- | SME (%) | Equations | Sp (%) | Pseudo- | SME (%) | Equations | |
2 year | 42.59 | 82.46 | 38.64 | 58.49 | 65.87 | 55.43 | ||
5 year | 50.1 | 77.9 | 45.25 | 61.11 | 65.48 | 57.57 | ||
10 year | 58.13 | 72.02 | 53.4 | 66.42 | 62.92 | 62.29 |
Note: CN = curve number; DA = drainage area (); FSl = focal slope (); IA = isochronal area (); SME = standard model error; Sp = average standard error of prediction; Sp, Pseudo-, and SME are computed using Log10(Peak); Peak flows given in .