Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
04087220 ROOT RIVER NEAR FRANKLIN, WI
| Water year | Segment | Discharge code | Cumulative reservoir storage (acre-feet) | Urban fraction | Precipitation (inches) | Observed peak discharge (ft3/s) | Adjusted peak discharge (ft3/s) | Exceedance probability |
| 1960 | 1 | 7 | 0 | 0.517 | 0.892 | 5130 | 6290 | 0.000 |
| 1964 | 1 | -- | 0 | 0.555 | 2.111 | 792 | 1070 | 0.528 |
| 1965 | 1 | -- | 0 | 0.565 | 0.713 | 1600 | 2010 | 0.079 |
| 1966 | 1 | -- | 0 | 0.575 | 0.483 | 1300 | 1630 | 0.168 |
| 1967 | 1 | -- | 0 | 0.584 | 1.484 | 808 | 1060 | 0.539 |
| 1968 | 1 | -- | 0 | 0.594 | 1.226 | 910 | 1170 | 0.446 |
| 1969 | 1 | -- | 0 | 0.603 | 0.976 | 2650 | 3120 | 0.017 |
| 1970 | 1 | -- | 0 | 0.613 | 1.484 | 1220 | 1490 | 0.218 |
| 1971 | 1 | -- | 0 | 0.621 | 0.207 | 1020 | 1260 | 0.370 |
| 1972 | 1 | -- | 0 | 0.630 | 1.467 | 2270 | 2640 | 0.029 |
| 1973 | 1 | -- | 0 | 0.638 | 2.288 | 3700 | 4210 | 0.007 |
| 1974 | 1 | -- | 0 | 0.647 | 0.644 | 1680 | 1960 | 0.086 |
| 1975 | 1 | -- | 0 | 0.655 | 1.210 | 1420 | 1660 | 0.162 |
| 1976 | 1 | -- | 0 | 0.663 | 1.213 | 2160 | 2460 | 0.039 |
| 1977 | 1 | -- | 0 | 0.672 | 1.278 | 534 | 669 | 0.878 |
| 1978 | 1 | -- | 0 | 0.680 | 1.238 | 980 | 1150 | 0.465 |
| 1979 | 1 | -- | 0 | 0.689 | 0.272 | 1300 | 1480 | 0.224 |
| 1980 | 1 | -- | 0 | 0.697 | 0.668 | 860 | 995 | 0.596 |
| 1981 | 1 | -- | 0 | 0.702 | 0.576 | 474 | 579 | 0.930 |
| 1982 | 1 | -- | 0 | 0.708 | 0.184 | 556 | 661 | 0.884 |
| 1983 | 1 | -- | 0 | 0.714 | 1.547 | 1080 | 1210 | 0.410 |
| 1984 | 1 | 2 | 0 | 0.719 | 0.410 | 550 | 645 | 0.894 |
| 1985 | 1 | -- | 0 | 0.725 | 0.478 | 698 | 794 | 0.781 |
| 1986 | 1 | -- | 0 | 0.730 | 0.345 | 708 | 800 | 0.776 |
| 1987 | 1 | -- | 0 | 0.736 | 1.358 | 579 | 660 | 0.884 |
| 1988 | 1 | 9 | 0 | 0.741 | 0.535 | 530 | 605 | 0.919 |
| 1989 | 1 | -- | 0 | 0.747 | 1.232 | 442 | 507 | 0.953 |
| 1990 | 1 | -- | 0 | 0.752 | 1.156 | 880 | 956 | 0.634 |
| 1991 | 1 | -- | 0 | 0.757 | 0.861 | 587 | 648 | 0.892 |
| 1992 | 1 | -- | 0 | 0.762 | 0.757 | 641 | 699 | 0.855 |
| 1993 | 1 | -- | 0 | 0.767 | 0.893 | 1180 | 1250 | 0.378 |
| 1994 | 1 | 18 | 0 | 0.772 | 0.653 | 600 | 648 | 0.892 |
| 1995 | 1 | -- | 0 | 0.777 | 0.799 | 430 | 468 | 0.961 |
| 1996 | 1 | -- | 0 | 0.782 | 1.166 | 1020 | 1070 | 0.532 |
| 1997 | 1 | -- | 0 | 0.787 | 1.243 | 1750 | 1810 | 0.121 |
| 1998 | 1 | -- | 0 | 0.792 | 1.088 | 558 | 587 | 0.927 |
| 1999 | 1 | -- | 0 | 0.797 | 1.324 | 2050 | 2100 | 0.067 |
| 2000 | 1 | -- | 0 | 0.802 | 4.329 | 2420 | 2460 | 0.038 |
| 2001 | 1 | -- | 0 | 0.804 | 1.978 | 917 | 937 | 0.653 |
| 2002 | 1 | -- | 0 | 0.806 | 1.346 | 780 | 797 | 0.779 |
| 2003 | 1 | -- | 0 | 0.808 | 0.921 | 449 | 461 | 0.963 |
| 2004 | 1 | -- | 0 | 0.810 | 2.153 | 1190 | 1210 | 0.417 |
| 2005 | 1 | -- | 0 | 0.812 | 0.431 | 618 | 628 | 0.905 |
| 2006 | 1 | -- | 0 | 0.814 | 1.181 | 1160 | 1170 | 0.446 |
| 2007 | 1 | -- | 0 | 0.816 | 1.718 | 1070 | 1080 | 0.524 |
| 2008 | 1 | -- | 0 | 0.818 | 4.816 | 5350 | 5360 | 0.000 |
| 2009 | 1 | -- | 0 | 0.820 | 2.880 | 2260 | 2260 | 0.049 |