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Upper Midwest Environmental Sciences Center

Water quality update title page

Comparison of 2012 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 . . . . . . H . . . . l l
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . L l
  BWC . . . . . . . . . . . . .
  LP . . . . . . H . . . . . l
Spring POOL . . . . l . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . l l . . . . . . .
  BWC . . . . . . . . . . . . .
  LP . . . . . . . . . . . . .
Summer POOL . l . l l l . . . . . . .
  MC . L . . l l . . . . . . .
  SC . l . . . l . . . . . . .
  BWC . . . . . . . . . . . . .
  LP . . . . . . . . . . . . .
Fall POOL . . . H l . . . . l . . .
  MC . . . H . . . . . . . . .
  SC . . . H . . . . . . . . .
  BWC . . . . l . . . . l . . .
  LP . . . H . . . . . l . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 8 Winter POOL . . . . l l . . . . . L .
  MC . . . . . . . . . . . l .
  SC . . . . . . . . . . . l .
  BWC . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . L . l
  MC . . . h . . . . . . l . .
  SC . . . . . . . . . . . . l
  BWC . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Summer POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
  IMP . . l . l l l l . . . . .
Fall POOL . . . . . . . . L L . . .
  MC . . . . . . . . l l . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . L . . .
  IMP . . . . . . . . l l . . L
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 13 Winter POOL . . . . . . . . . . L L .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . l .
  BWC . . . . . . . . l l l l .
  IMP . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . l . l
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . l l . . .
  IMP . . . h . . . . . . . . l
Summer POOL . . l . . . . . . . . . .
  MC . . L . . . . . l . . . .
  SC . . L . . . . . . L . . .
  BWC . . . . . . . . . l . . .
  IMP . . l . . . . . . . . . .
Fall POOL . . . H . . . h l L l l l
  MC . h . H l . . . . l . . .
  SC . h . H . . . . . . . . .
  BWC . . . h . . . . . L . . .
  IMP . . . h . . . h l L l . l
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 26 Winter POOL . H . . . . . H . . . l .
  MC . h . . . . . . . . . . .
  SC . . . . . . . H . . . . .
  BWC h . . . . . . . . . . . .
  SL H . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
  SL . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Summer POOL . . l l l l . . L L . . .
  MC h . l l . l . . L L . . .
  SC . . L L l l . . L L . . .
  BWC . . . L . . . . . . . . .
  SL . . . . . . . . . . . . .
  IMP . . . . . . . . . . . . .
Fall POOL . . . . L l . . L L . . .
  MC . . . . . . . . L L . . .
  SC . . . h . . . . L L . . .
  BWC . . . h l l l . l . . . .
  SL . . . . . . . . . . . . .
  IMP . . . h . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Open River Winter POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . H . . . . . . . .
Summer POOL . . . . . . . . L L . . .
  MC . . . . . . . . L L . . .
  SC h . . . . . . . . . . . .
Fall POOL . H H . l . . H L L l . .
  MC . H H . l . . H L L l . .
  SC . . H . . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
La Grange Winter POOL . . . . . . . . . . . . .
  MC . . . . . . . . . . . . .
  SC . . . . . . . . . . . . .
  BWC . . . . . . . . . . . . .
Spring POOL H L . . . . . . . . . . .
  MC h L . . . . . . . . . . .
  SC h l . . . . . . . . . . .
  BWC H l . . . . . . . . . . .
Summer POOL . . . . . . . . l . . . .
  MC . . . . . . . . l . . . .
  SC . . . . . . . . . . . . .
  BWC . . h . . . . . . . . . .
Fall POOL . . h . l l . . L L l . .
  MC . . . . L L l . L L . . .
  SC . . . . . l . . . . . . .
  BWC . . h . . . . . . . . . .
                             

*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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