Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05539950 KLEIN CREEK AT CAROL STREAM, 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 0.197 1.410 172 379 0.393
1962 1 -- 0 0.216 0.623 107 267 0.735
1963 1 -- 0 0.235 1.362 119 281 0.689
1964 1 -- 0 0.254 2.156 101 250 0.785
1965 1 -- 0 0.273 0.791 114 266 0.740
1966 1 -- 0 0.292 1.488 440 744 0.038
1967 1 -- 0 0.311 1.311 213 403 0.326
1968 1 -- 0 0.330 1.984 224 411 0.303
1969 1 -- 0 0.349 1.350 119 256 0.768
1970 1 -- 0 0.368 1.373 148 292 0.653
1971 1 -- 0 0.404 0.335 144 278 0.702
1972 1 -- 0 0.439 2.106 888 1260 0.007
1973 1 -- 0 0.475 0.819 165 287 0.668
1974 1 -- 0 0.510 0.584 186 305 0.610
1975 1 -- 0 0.546 1.071 170 276 0.709
1976 1 -- 0 0.582 1.124 280 401 0.327
1977 1 -- 0 0.617 0.644 141 223 0.857
1978 1 -- 0 0.653 0.835 212 296 0.639
1979 1 -- 0 0.688 0.989 412 516 0.148