Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
04087257 PIKE RIVER NEAR RACINE, WI

Observed annual peak-flood magnitudes were adjusted to 2010 land-use conditions on the basis of panel data regression model with fixed effect analysis.  The symbols presented in the figure are: "observed annual peaks", "adjusted annual peaks", and   "fraction of urbanization in the watershed"

Legend for Graph

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
1972 1 -- 0 0.215 1.268 1200 1520 0.212
1973 1 -- 0 0.221 1.550 824 1090 0.477
1974 1 -- 0 0.228 0.554 1240 1550 0.200
1975 1 -- 0 0.235 1.042 862 1120 0.454
1976 1 -- 0 0.242 1.336 1480 1820 0.130
1977 1 -- 0 0.249 0.983 200 307 0.971
1978 1 -- 0 0.256 1.252 1340 1630 0.178
1979 1 -- 0 0.263 1.238 1100 1350 0.298
1980 1 -- 0 0.270 0.789 443 592 0.858
1981 1 -- 0 0.274 0.846 820 1020 0.527
1982 1 -- 0 0.278 1.749 674 850 0.670
1983 1 -- 0 0.282 1.394 959 1170 0.412
1984 1 -- 0 0.286 0.505 695 866 0.656
1985 1 -- 0 0.290 1.025 588 742 0.757
1986 1 -- 0 0.294 0.163 1090 1300 0.327
1987 1 -- 0 0.298 0.765 836 1020 0.533
1988 1 -- 0 0.302 0.930 915 1100 0.465
1989 1 -- 0 0.306 1.706 601 743 0.756
1990 1 -- 0 0.310 1.234 1040 1230 0.374
1991 1 -- 0 0.321 0.974 801 951 0.589
1992 1 -- 0 0.333 0.714 791 928 0.608
1993 1 -- 0 0.344 0.947 1140 1300 0.331
1994 1 9 0 0.356 0.705 940 1070 0.491
1995 1 -- 0 0.367 1.111 878 987 0.557
1996 1 -- 0 0.378 0.912 1360 1480 0.231
1997 1 -- 0 0.390 1.707 944 1030 0.519
1998 1 -- 0 0.401 1.262 959 1040 0.517
1999 1 -- 0 0.412 1.302 1230 1300 0.326
2000 1 -- 0 0.424 2.795 1580 1650 0.175
2001 1 -- 0 0.428 1.373 1360 1420 0.263
2002 1 -- 0 0.433 1.849 1010 1050 0.504
2003 1 -- 0 0.437 0.443 321 341 0.962
2004 1 -- 0 0.442 1.833 1650 1690 0.163
2005 1 -- 0 0.447 0.518 614 634 0.831
2006 1 -- 0 0.451 1.009 555 570 0.873
2007 1 -- 0 0.456 3.083 1720 1740 0.151
2008 1 -- 0 0.460 2.262 1960 1980 0.096
2009 1 -- 0 0.465 0.842 1860 1870 0.120