Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05534900 SKOKIE RIVER AT LAKE BLUFF, 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
1962 1 -- 0 0.376 0.210 132 223 0.587
1963 1 -- 0 0.398 1.447 73 142 0.896
1964 1 -- 0 0.420 3.073 158 249 0.480
1965 1 -- 0 0.442 1.397 158 243 0.501
1966 1 -- 0 0.464 0.589 145 221 0.593
1967 1 -- 0 0.486 1.476 244 336 0.200
1968 1 -- 0 0.508 1.038 77 131 0.926
1969 1 -- 0 0.530 2.823 374 483 0.058
1970 1 -- 0 0.552 2.295 324 415 0.101
1971 1 -- 0 0.560 0.309 166 226 0.572
1972 1 -- 0 0.568 3.990 350 441 0.081
1973 1 -- 0 0.576 1.596 280 353 0.177
1974 1 -- 0 0.584 1.457 316 394 0.126
1975 1 -- 0 0.592 1.407 162 214 0.623
1976 1 -- 0 0.600 2.225 395 480 0.059