Observed and urbanization-adjusted annual maximum peak discharge and associated urban fraction and precipitation values at USGS streamgage:
05551330 MILL CREEK NEAR BATAVIA, 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
1998 1 CE 209 0.427 0.675 746 896 0.076
1999 1 C 209 0.441 1.098 1080 1250 0.024
2000 1 CE 209 0.455 1.502 191 252 0.894
2001 1 C 209 0.472 0.686 530 619 0.250
2002 1 C 252 0.490 1.373 406 476 0.482
2003 1 C 252 0.508 2.331 272 322 0.783
2004 1 C 252 0.526 2.181 331 378 0.679
2005 1 C 407 0.544 0.816 181 211 0.936
2006 1 CE 407 0.562 1.553 114 132 0.983
2007 1 C 407 0.580 3.165 676 710 0.172
2008 1 C 407 0.598 4.117 4510 4620 0.000
2009 1 C 407 0.616 0.749 665 676 0.195