Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05531300 SALT CREEK AT ELMHURST, 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 |
| 1948 | 1 | 7 | 409 | 0.210 | 1.899 | 1130 | 1770 | 0.139 |
| 1950 | 1 | 7 | 409 | 0.230 | 1.232 | 1160 | 1790 | 0.136 |
| 1955 | 1 | 7 | 409 | 0.340 | 3.454 | 1380 | 1910 | 0.105 |
| 1957 | 1 | 7 | 409 | 0.384 | 2.783 | 895 | 1280 | 0.381 |
| 1960 | 1 | -- | 409 | 0.450 | 0.377 | 1260 | 1600 | 0.189 |
| 1961 | 1 | -- | 409 | 0.470 | 1.997 | 688 | 948 | 0.666 |
| 1962 | 1 | -- | 409 | 0.489 | 0.246 | 1090 | 1370 | 0.309 |
| 1963 | 1 | -- | 409 | 0.509 | 1.268 | 608 | 828 | 0.773 |
| 1964 | 1 | -- | 409 | 0.528 | 0.745 | 614 | 818 | 0.781 |
| 1965 | 1 | -- | 409 | 0.548 | 0.515 | 688 | 878 | 0.732 |
| 1966 | 1 | -- | 409 | 0.568 | 1.294 | 1400 | 1590 | 0.192 |
| 1967 | 1 | -- | 409 | 0.587 | 1.427 | 1480 | 1650 | 0.175 |
| 1968 | 1 | -- | 509 | 0.607 | 1.668 | 934 | 1070 | 0.551 |
| 1969 | 1 | -- | 509 | 0.626 | 1.455 | 982 | 1100 | 0.528 |
| 1970 | 1 | -- | 509 | 0.646 | 1.337 | 808 | 906 | 0.709 |
| 1971 | 1 | -- | 509 | 0.658 | 0.364 | 964 | 1050 | 0.575 |
| 1972 | 1 | -- | 509 | 0.670 | 1.264 | 2230 | 2280 | 0.054 |
| 1973 | 1 | -- | 509 | 0.682 | 1.245 | 729 | 795 | 0.800 |
| 1974 | 1 | -- | 509 | 0.694 | 1.043 | 1030 | 1070 | 0.553 |
| 1975 | 1 | -- | 509 | 0.706 | 0.965 | 944 | 976 | 0.641 |
| 1976 | 1 | -- | 509 | 0.718 | 1.074 | 1100 | 1110 | 0.519 |
| 1977 | 0 | -- | 4510 | 0.730 | 1.181 | 606 | 648 | 0.905 |
| 1978 | 0 | -- | 4510 | 0.742 | 1.339 | 914 | 948 | 0.669 |
| 1979 | 0 | -- | 4510 | 0.754 | 0.731 | 1520 | 1550 | 0.206 |
| 1980 | 0 | -- | 4510 | 0.766 | 0.764 | 703 | 750 | 0.833 |
| 1989 | 2 | C | 6818 | 0.793 | 1.605 | 1580 | 1630 | 0.183 |
| 1990 | 2 | C | 7688 | 0.796 | 1.592 | 1530 | 1570 | 0.200 |
| 1991 | 2 | C | 7688 | 0.797 | 1.963 | 1270 | 1310 | 0.358 |
| 1992 | 2 | CE | 7688 | 0.798 | 0.984 | 645 | 674 | 0.889 |
| 1993 | 2 | C | 7688 | 0.800 | 0.693 | 1130 | 1160 | 0.478 |
| 1994 | 2 | C | 7688 | 0.801 | 2.480 | 1500 | 1530 | 0.216 |
| 1995 | 2 | C | 7688 | 0.802 | 1.926 | 1390 | 1420 | 0.272 |
| 1996 | 2 | C | 8263 | 0.804 | 0.839 | 1250 | 1280 | 0.383 |
| 1997 | 2 | C | 8263 | 0.805 | 2.573 | 1460 | 1490 | 0.236 |
| 1998 | 0 | C | 16563 | 0.806 | 0.498 | 1050 | 1080 | 0.550 |
| 1999 | 0 | C | 16563 | 0.807 | 1.683 | 1300 | 1330 | 0.341 |
| 2000 | 0 | C | 16563 | 0.809 | 1.431 | 1250 | 1280 | 0.385 |
| 2001 | 0 | C | 16563 | 0.811 | 2.338 | 1110 | 1130 | 0.502 |
| 2002 | 0 | C | 18313 | 0.814 | 3.004 | 1520 | 1550 | 0.210 |
| 2003 | 3 | C | 18313 | 0.816 | 1.345 | 1170 | 1190 | 0.454 |
| 2004 | 3 | C | 18313 | 0.818 | 1.099 | 1070 | 1090 | 0.540 |
| 2005 | 3 | CE | 18313 | 0.821 | 0.866 | 1040 | 1050 | 0.568 |
| 2006 | 3 | C | 18313 | 0.823 | 0.512 | 798 | 809 | 0.789 |
| 2007 | 3 | C | 18313 | 0.826 | 1.271 | 1310 | 1320 | 0.347 |
| 2008 | 3 | C | 18313 | 0.828 | 3.460 | 1940 | 1950 | 0.098 |
| 2009 | 3 | C | 18313 | 0.831 | 0.974 | 1430 | 1430 | 0.264 |