Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05551800 FOX RIVER TRIBUTARY NO 2 NEAR FOX, IL

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
1961 1 -- 0 0.130 1.305 36 75 0.822
1962 1 -- 0 0.132 0.318 29 65 0.886
1963 1 -- 0 0.135 0.725 17 45 0.959
1964 1 -- 0 0.137 0.996 11 33 0.985
1965 1 -- 0 0.140 0.256 218 324 0.019
1966 1 -- 0 0.142 1.498 96 157 0.233
1967 1 -- 0 0.145 1.135 36 74 0.829
1968 1 -- 0 0.147 1.302 14 39 0.974
1969 1 -- 0 0.150 0.994 46 88 0.730
1970 1 -- 0 0.153 1.532 242 354 0.016
1971 1 -- 0 0.157 0.375 57 103 0.611
1972 1 -- 0 0.161 1.498 192 287 0.032
1973 1 -- 0 0.165 1.434 56 101 0.627
1974 1 -- 0 0.169 0.594 147 226 0.072
1975 1 -- 0 0.174 0.879 304 431 0.009
1976 1 -- 0 0.178 0.990 64 111 0.543
1977 1 -- 0 0.182 1.391 11 30 0.988
1978 1 -- 0 0.186 1.653 320 448 0.008
1980 1 -- 0 0.195 0.638 125 191 0.133