Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05530960 SALT CREEK NEAR PALATINE, 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 0.334 1.351 213 356 0.518
1962 1 -- 0 0.362 0.260 215 349 0.536
1963 1 -- 0 0.389 1.750 123 222 0.868
1964 1 -- 0 0.417 0.739 112 202 0.907
1965 1 -- 0 0.444 0.560 210 316 0.628
1966 1 -- 0 0.472 1.218 367 495 0.213
1967 1 -- 0 0.499 1.290 744 932 0.023
1968 1 -- 0 0.526 3.277 240 326 0.601
1969 1 -- 0 0.554 2.109 180 248 0.808
1970 1 -- 0 0.581 2.395 371 455 0.278
1971 1 2 0 0.596 0.380 232 294 0.692
1972 1 -- 0 0.611 1.578 609 711 0.063
1973 1 -- 0 0.626 1.816 526 610 0.112
1974 1 -- 0 0.641 0.947 264 315 0.631
1975 1 -- 0 0.656 1.587 314 365 0.497
1976 1 -- 0 0.670 1.612 417 468 0.254
1977 1 -- 0 0.685 0.703 244 279 0.734
1978 1 -- 0 0.700 1.904 697 751 0.050
1979 1 -- 0 0.715 0.504 366 397 0.418