Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05528170 DIAMOND LAKE DRAIN AT MUNDELEIN, 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 0.416 1.213 64 88 0.353
1962 1 -- 0 0.419 0.261 56 78 0.463
1963 1 -- 0 0.421 1.257 35 52 0.788
1964 1 -- 0 0.423 0.685 67 90 0.322
1965 1 -- 0 0.426 0.565 36 53 0.777
1966 1 -- 0 0.428 1.162 78 102 0.218
1967 1 -- 0 0.430 0.922 49 68 0.583
1968 1 -- 0 0.433 1.246 40 57 0.726
1969 1 -- 0 0.435 1.340 23 37 0.930
1970 1 -- 0 0.437 1.509 36 52 0.785
1971 1 -- 0 0.440 0.415 110 140 0.077
1972 1 -- 0 0.443 1.197 68 90 0.326
1973 1 -- 0 0.446 1.434 56 76 0.488
1974 1 -- 0 0.449 1.112 54 73 0.520
1975 1 -- 0 0.452 0.819 107 136 0.088
1976 1 -- 0 0.455 1.255 41 57 0.728