Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05520500 KANKAKEE RIVER AT MOMENCE, IL
| 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 |
| 1940 | 1 | -- | 12275 | 0.016 | 0.046 | 4860 | 5430 | 0.774 |
| 1941 | 1 | -- | 12275 | 0.017 | 0.773 | 2910 | 3330 | 0.914 |
| 1942 | 1 | -- | 12275 | 0.017 | 0.154 | 6310 | 6970 | 0.647 |
| 1943 | 1 | -- | 12275 | 0.018 | 0.609 | 8450 | 9250 | 0.447 |
| 1944 | 1 | -- | 12275 | 0.019 | 0.820 | 6950 | 7640 | 0.592 |
| 1945 | 1 | -- | 12275 | 0.019 | 0.504 | 4940 | 5490 | 0.770 |
| 1946 | 1 | -- | 12275 | 0.020 | 0.283 | 5460 | 6040 | 0.726 |
| 1947 | 1 | -- | 12275 | 0.020 | 0.587 | 6260 | 6890 | 0.653 |
| 1948 | 1 | -- | 12275 | 0.021 | 0.345 | 6260 | 6880 | 0.653 |
| 1949 | 1 | -- | 12275 | 0.022 | 0.215 | 5060 | 5610 | 0.762 |
| 1950 | 1 | -- | 12275 | 0.022 | 1.012 | 10100 | 10900 | 0.334 |
| 1951 | 1 | 2 | 12275 | 0.023 | 0.317 | 8400 | 9140 | 0.455 |
| 1952 | 1 | -- | 12275 | 0.024 | 1.230 | 6960 | 7600 | 0.596 |
| 1953 | 1 | -- | 12275 | 0.025 | 0.436 | 4560 | 5050 | 0.803 |
| 1954 | 1 | -- | 12275 | 0.026 | 1.702 | 4960 | 5470 | 0.772 |
| 1955 | 1 | -- | 12275 | 0.027 | 0.809 | 5880 | 6430 | 0.692 |
| 1956 | 1 | -- | 12275 | 0.028 | 0.683 | 5460 | 5980 | 0.731 |
| 1957 | 1 | -- | 12275 | 0.029 | 1.963 | 6960 | 7560 | 0.600 |
| 1958 | 1 | -- | 12275 | 0.030 | 1.255 | 5670 | 6190 | 0.713 |
| 1959 | 1 | 2 | 12275 | 0.031 | 0.073 | 7100 | 7690 | 0.587 |
| 1960 | 1 | -- | 12275 | 0.032 | 1.117 | 6520 | 7070 | 0.638 |
| 1961 | 1 | -- | 12275 | 0.033 | 1.125 | 6740 | 7300 | 0.620 |
| 1962 | 1 | -- | 12275 | 0.034 | 0.446 | 7180 | 7750 | 0.580 |
| 1963 | 1 | 2 | 12275 | 0.034 | 0.219 | 6500 | 7030 | 0.641 |
| 1964 | 1 | -- | 13029 | 0.035 | 0.098 | 2410 | 2700 | 0.942 |
| 1965 | 1 | -- | 13029 | 0.036 | 0.911 | 5670 | 6150 | 0.717 |
| 1966 | 1 | -- | 14729 | 0.037 | 1.250 | 7310 | 7860 | 0.570 |
| 1967 | 1 | -- | 14729 | 0.038 | 1.057 | 7540 | 8090 | 0.547 |
| 1968 | 1 | -- | 14729 | 0.039 | 1.183 | 8240 | 8820 | 0.481 |
| 1969 | 1 | 2 | 14729 | 0.040 | 0.254 | 6300 | 6780 | 0.662 |
| 1970 | 1 | -- | 14729 | 0.040 | 1.639 | 9480 | 10100 | 0.385 |
| 1971 | 1 | 2 | 14729 | 0.042 | 0.218 | 5200 | 5610 | 0.761 |
| 1972 | 1 | -- | 14729 | 0.044 | 1.141 | 6490 | 6940 | 0.649 |
| 1973 | 1 | -- | 14729 | 0.046 | 0.998 | 8380 | 8900 | 0.475 |
| 1974 | 1 | -- | 14729 | 0.048 | 0.905 | 10000 | 10600 | 0.356 |
| 1975 | 1 | -- | 14729 | 0.049 | 0.765 | 8440 | 8930 | 0.473 |
| 1976 | 1 | -- | 14729 | 0.051 | 0.903 | 11900 | 12500 | 0.250 |
| 1977 | 1 | -- | 23729 | 0.053 | 0.467 | 4780 | 5100 | 0.800 |
| 1978 | 1 | -- | 23729 | 0.055 | 0.931 | 7760 | 8170 | 0.539 |
| 1979 | 1 | 2 | 23729 | 0.057 | 0.867 | 16000 | 16600 | 0.114 |
| 1980 | 1 | -- | 23729 | 0.058 | 0.147 | 4800 | 5080 | 0.801 |
| 1981 | 1 | -- | 23729 | 0.059 | 0.946 | 9760 | 10200 | 0.379 |
| 1982 | 1 | -- | 23729 | 0.060 | 0.573 | 11000 | 11400 | 0.304 |
| 1983 | 1 | -- | 23729 | 0.061 | 0.341 | 9840 | 10300 | 0.376 |
| 1984 | 1 | 2 | 23780 | 0.062 | 0.216 | 7200 | 7520 | 0.603 |
| 1985 | 1 | -- | 23780 | 0.063 | 0.612 | 9450 | 9830 | 0.403 |
| 1986 | 1 | -- | 23780 | 0.064 | 0.609 | 9080 | 9440 | 0.432 |
| 1987 | 1 | -- | 23780 | 0.065 | 1.034 | 5780 | 6040 | 0.726 |
| 1988 | 1 | -- | 23780 | 0.066 | 0.456 | 6400 | 6670 | 0.672 |
| 1989 | 1 | -- | 23780 | 0.067 | 0.981 | 8080 | 8380 | 0.519 |
| 1990 | 1 | -- | 23780 | 0.068 | 0.396 | 7050 | 7320 | 0.618 |
| 1991 | 1 | -- | 23780 | 0.070 | 0.899 | 10600 | 10900 | 0.334 |
| 1992 | 1 | -- | 24100 | 0.073 | 0.065 | 4620 | 4800 | 0.822 |
| 1993 | 1 | -- | 24100 | 0.075 | 0.711 | 9160 | 9420 | 0.434 |
| 1994 | 1 | -- | 24100 | 0.077 | 0.879 | 8050 | 8260 | 0.531 |
| 1995 | 1 | -- | 24100 | 0.079 | 0.597 | 7470 | 7660 | 0.590 |
| 1996 | 1 | -- | 24100 | 0.081 | 0.592 | 10000 | 10200 | 0.379 |
| 1997 | 1 | -- | 24100 | 0.083 | 0.453 | 10100 | 10300 | 0.374 |
| 1998 | 1 | -- | 24100 | 0.085 | 0.683 | 9990 | 10100 | 0.382 |
| 1999 | 1 | -- | 24100 | 0.088 | 0.437 | 8510 | 8630 | 0.497 |
| 2000 | 1 | -- | 24100 | 0.090 | 0.919 | 6380 | 6460 | 0.690 |
| 2001 | 1 | -- | 24100 | 0.091 | 0.622 | 8310 | 8400 | 0.518 |
| 2002 | 1 | -- | 24100 | 0.092 | 0.746 | 10300 | 10400 | 0.367 |
| 2003 | 1 | -- | 24100 | 0.093 | 0.846 | 7110 | 7170 | 0.630 |
| 2004 | 1 | -- | 24100 | 0.094 | 0.837 | 7250 | 7300 | 0.620 |
| 2005 | 1 | -- | 24100 | 0.095 | 0.566 | 10100 | 10200 | 0.382 |
| 2006 | 1 | -- | 24100 | 0.096 | 0.395 | 3780 | 3800 | 0.888 |
| 2007 | 1 | -- | 24100 | 0.097 | 0.513 | 9720 | 9750 | 0.409 |
| 2008 | 1 | -- | 24100 | 0.098 | 1.188 | 11800 | 11800 | 0.283 |
| 2009 | 1 | -- | 24100 | 0.099 | 0.833 | 12000 | 12000 | 0.273 |