Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05527800 DES PLAINES RIVER AT RUSSELL, 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 |
| 1960 | 1 | -- | 0 | 0.050 | 0.776 | 1320 | 1510 | 0.140 |
| 1961 | 1 | 2 | 0 | 0.052 | 0.273 | 425 | 518 | 0.797 |
| 1962 | 1 | -- | 0 | 0.054 | 0.281 | 820 | 959 | 0.408 |
| 1963 | 1 | -- | 0 | 0.055 | 1.575 | 104 | 141 | 0.988 |
| 1964 | 1 | -- | 0 | 0.057 | 0.692 | 157 | 206 | 0.968 |
| 1965 | 1 | -- | 0 | 0.059 | 0.527 | 600 | 708 | 0.633 |
| 1966 | 1 | -- | 0 | 0.061 | 0.536 | 740 | 863 | 0.487 |
| 1967 | 1 | -- | 0 | 0.063 | 1.516 | 720 | 838 | 0.509 |
| 1968 | 1 | -- | 0 | 0.065 | 0.349 | 235 | 296 | 0.936 |
| 1969 | 1 | -- | 0 | 0.066 | 0.880 | 273 | 338 | 0.918 |
| 1970 | 1 | -- | 0 | 0.068 | 1.631 | 508 | 599 | 0.731 |
| 1971 | 1 | -- | 0 | 0.072 | 0.276 | 898 | 1030 | 0.362 |
| 1972 | 1 | -- | 900 | 0.075 | 1.284 | 816 | 934 | 0.428 |
| 1973 | 1 | -- | 900 | 0.078 | 1.469 | 940 | 1060 | 0.337 |
| 1974 | 1 | -- | 900 | 0.081 | 0.530 | 1690 | 1870 | 0.070 |
| 1975 | 1 | -- | 900 | 0.084 | 0.327 | 407 | 477 | 0.828 |
| 1976 | 1 | -- | 900 | 0.088 | 1.207 | 1990 | 2180 | 0.045 |
| 1977 | 1 | -- | 900 | 0.091 | 0.732 | 105 | 132 | 0.990 |
| 1978 | 1 | -- | 900 | 0.094 | 1.678 | 1380 | 1520 | 0.138 |
| 1979 | 1 | -- | 900 | 0.097 | 0.286 | 2120 | 2300 | 0.038 |
| 1980 | 1 | -- | 900 | 0.101 | 0.773 | 484 | 550 | 0.771 |
| 1981 | 1 | -- | 900 | 0.103 | 0.195 | 378 | 434 | 0.859 |
| 1982 | 1 | -- | 900 | 0.104 | 0.427 | 873 | 966 | 0.403 |
| 1983 | 1 | -- | 900 | 0.106 | 1.398 | 1630 | 1770 | 0.083 |
| 1984 | 1 | -- | 900 | 0.108 | 0.203 | 597 | 666 | 0.670 |
| 1985 | 1 | -- | 900 | 0.110 | 1.030 | 950 | 1040 | 0.351 |
| 1986 | 1 | -- | 900 | 0.112 | 1.191 | 1640 | 1770 | 0.083 |
| 1987 | 1 | -- | 900 | 0.114 | 0.786 | 435 | 489 | 0.820 |
| 1988 | 1 | -- | 900 | 0.116 | 0.948 | 442 | 495 | 0.815 |
| 1989 | 1 | -- | 900 | 0.118 | 0.617 | 155 | 182 | 0.977 |
| 1990 | 1 | -- | 900 | 0.120 | 0.248 | 852 | 928 | 0.433 |
| 1991 | 1 | -- | 900 | 0.124 | 1.085 | 587 | 643 | 0.691 |
| 1992 | 1 | -- | 900 | 0.129 | 0.360 | 428 | 472 | 0.832 |
| 1993 | 1 | -- | 900 | 0.134 | 1.065 | 1750 | 1850 | 0.072 |
| 1994 | 1 | 2 | 900 | 0.138 | 0.815 | 870 | 929 | 0.432 |
| 1995 | 1 | -- | 900 | 0.143 | 1.185 | 805 | 856 | 0.493 |
| 1996 | 1 | -- | 900 | 0.147 | 1.023 | 1200 | 1260 | 0.225 |
| 1997 | 1 | -- | 900 | 0.152 | 1.439 | 853 | 898 | 0.458 |
| 1998 | 1 | -- | 900 | 0.157 | 0.966 | 794 | 832 | 0.515 |
| 1999 | 1 | -- | 900 | 0.161 | 1.110 | 1250 | 1290 | 0.208 |
| 2000 | 1 | -- | 900 | 0.166 | 2.383 | 2130 | 2190 | 0.045 |
| 2001 | 1 | -- | 900 | 0.169 | 0.141 | 501 | 521 | 0.794 |
| 2002 | 1 | -- | 900 | 0.172 | 0.014 | 527 | 545 | 0.775 |
| 2003 | 1 | -- | 900 | 0.176 | 0.395 | 241 | 251 | 0.954 |
| 2004 | 1 | -- | 900 | 0.179 | 1.707 | 3500 | 3550 | 0.011 |
| 2005 | 1 | -- | 900 | 0.182 | 0.289 | 672 | 685 | 0.653 |
| 2006 | 1 | -- | 900 | 0.185 | 0.754 | 509 | 518 | 0.797 |
| 2007 | 1 | -- | 900 | 0.189 | 1.108 | 1610 | 1620 | 0.110 |
| 2008 | 1 | -- | 900 | 0.192 | 1.896 | 1910 | 1920 | 0.066 |
| 2009 | 1 | -- | 900 | 0.195 | 2.018 | 2470 | 2480 | 0.030 |