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Upper Midwest Environmental Sciences Center

Water quality update title page

Comparison of 2010 water quality conditions to normal conditions *

Key: H = very high
  h = high
  . = normal
  L = low
  l = very low
 
Reach Season Stratum TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 4 Winter POOL . . . . l . . . . . . l .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
  LP . . . . . . . . . . . . .
Spring POOL . . H . . . . . . . . . .
  MC h . h . l . . . . . . . .
  SC . . h . l l . . . . . . .
  BWC . . . . . . . . . . . . .
  LP . . H . . . . . . . . . .
Summer POOL . . h . L l . . . . . . .
  MC . . . . l . . . . . . . .
  SC . . . . l l . . . . . . .
  BWC . l . l l . . . . . . . .
  LP . . H . l . . . . . . . .
Fall POOL H l H l . . . . . . . . .
  MC . l h L . . . . . . . . .
  SC . . H . . . . . . . . . .
  BWC . . . . . . . . . . . . .
  LP H . H l . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 8 Winter POOL . . . . H . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Spring POOL . . h . l . . . . . . . l
  MC . . . . L . . . . . . . .
  SC . . . . . . . . . . . . l
  BWC . . h . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Summer POOL . L . L l l L L . . . . .
  MC . L . L . . l l . . . h .
  SC . L . L . l . l . . . . H
  BWC . L . L l L l l . . . . .
  IMP . l . l . . l l . . . . .
Fall POOL . L H l . . . . . . . . .
  MC . . H . . . . . . . . . .
  SC . . H . . . . . . . . . .
  BWC . . h . . . . . . . . . .
  IMP . L H l . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 13 Winter POOL . . . . . . . . . . . . .
  MC . . H . . . . . . . . . .
  SC . . . . . H . . . . . . .
  BWC . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . . . l
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . h . . . . . . . . . .
  IMP . . . . . . . . . . . . l
Summer POOL . L . L . . . l . . . . .
  MC . l . L . . . l . . . . .
  SC . L . L . . . l . . . . .
  BWC . . . l . . . l . . . . .
  IMP . l . L . . . . . . . . .
Fall POOL . l . L . . . . . . . . .
  MC . L . L . . . . . . . . .
  SC . L . L . . . . . . . . .
  BWC . l . l . . . . . h . . .
  IMP . L . l . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 26 Winter POOL l . . . . . . L . . . . .
  MC . . . . . . . L . . . . .
  SC . . . . . . . L . . . . .
  BWC . . . . . . . . . . . . .
  SL . . . . . . . . . . . . h
  IMP . . . . . . . . . . . . .
Spring POOL . . . l . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . h . h . . . . . .
  BWC . . . . . . . . . . . . .
  SL . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Summer POOL . L . . . . . l . . . . .
  MC . L . . . . . l . . . . .
  SC . . . . . . . l . . . . .
  BWC . . . L . . l L . . . . .
  SL . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Fall POOL . L . . . . . . . . . . .
  MC . L . . . . . . . . . . .
  SC . L l . . . . . . . . . .
  BWC . . . . . . . . h h . . .
  SL . . . . . . . . . . . . .
  IMP . l . . . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Open River Winter POOL . L l . H H H . . . . H .
  MC . L l . H H H . . . . H .
  SC . . . . H h h . . . . h .
Spring POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . l . . h h . . . . . . .
Summer POOL . L . . h . . L . . . H H
  MC . L . . h . . L . . . H H
  SC . L . . . . . L . . . h H
Fall POOL . . . . . . . . . . l . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . H . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
La Grange Winter POOL l . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . h l . h . . . . . . . .
  BWC . . . l . . . l . . . . .
Spring POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
Summer POOL . l . . l . l . L . . . .
  MC . . . . . . . . l . . . .
  SC . l . . . . . . . . . . .
  BWC . l . . L L l . l . . . .
Fall POOL . L h . . l l . . . . . .
  MC . L . . . l l . . . . . .
  SC . l . . . . . . . . . . .
  BWC . . . . . . . . l . . . .
                             

*Data acquired over a 15-yr period (1994-2009; data missing in 2003) was used to determine annual 95% upper confidence limits (UCL) and 95% lower confidence limits (LCL) of the mean for each variable/reach/episode/stratum. Estimates of the 95% upper and lower confidence limit for the year of interest (e.g., 2010; a year outside the 15-yr period), along with the median, were compared to the 15-yr annual extremes to determine unusual conditions. Estimates where the median was higher than the highest annual 15-yr UCL or lower than the lowest annual 15-yr LCL were "low" or "high," respectively. Estimates where the LCL was higher than the highest annual 15-yr UCL or the UCL was lower than the lowest annual 15-yr LCL were "very low" or "very high", respectively.

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