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Upper Midwest Environmental Sciences Center

The Long Term Resource Monitoring Program

An element of the Upper Mississippi River Restoration - Environmental Management Program

Water Quality

Upper Mississippi River Restoration - Environmental Management Program U. S. Army Corps of Enineers


Comparison of 2018 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 . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . . . . .
LP . . . . . . . . . . H . .
Spring POOL . . . . . . . . . . . . .
MC L . . . . . . . . . . . .
SC L . . . . . . . . . . . .
BWC . . . . . . . . . . . . .
LP . . . . . . . . . . . . .
Summer POOL . . . . l l . . . . l . .
MC . . . . l l . . . . . . .
SC . . . . l l . . . . . . .
BWC . . . . l l l l . . . . .
LP . . . . . . . . . . l . .
Fall POOL . . H . . . . . h H . . .
MC . . h . . . . . . . . . .
SC . . h . . . . . h h . . .
BWC . . . . . . . . h h . . .
LP . . H . . . . . . . . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 8 Winter POOL . . . . . . . . . . . . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . h . . .
IMP . . . . H . . . . . . . .
Spring POOL . . . . . . . . . . . . .
MC L . . . . . . . . . . . .
SC l . . . . . . . . . . H .
BWC . . . . . . . . . . . . .
IMP . . . . . . . . . . . . .
Summer POOL . . . . l l L L . . . . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . L L L l . . . . .
IMP . . . . l l l l . . . . .
Fall POOL . . . . . . . . h h . . .
MC . . . . . . . . h h . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . . . . .
IMP . . h . . . . . h h . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 13 Winter POOL . . . . . . . . . . . H h
MC . . . . . . . . . . . H H
SC . . . . H H H . . . . h h
BWC . . . . . . . . . . . . .
IMP . . . . H h . . . . . h h
Spring POOL . . . . . . . . . . l . .
MC . h . . . . . . . . . . .
SC . h . . . . . . . . . . .
BWC . H . . . . . . . . . . .
IMP . . . . . . . . . . . . .
Summer POOL . . . . . . . l . . l . .
MC . . . . . . . . . . l . .
SC . . . . . . . . . . l . .
BWC . . . . . l . l . . . . .
IMP . . . . . . . . . . . . .
Fall POOL . . . . H H . . H H . . .
MC . . . . . . . . H H . . .
SC . . . . . . . . h H . . .
BWC . . . . . . . l h H . . .
IMP . . . . . h . . . h . . .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Pool 26 Winter POOL . . . L . . . . . . . . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . . . . .
SL . . . . . . . . . . . . .
IMP . . . . . . . . . . . . .
Spring POOL . . . l . . . . . . . . .
MC . . . . . . . . . . . . .
SC . . . L . . . . . . . . .
BWC h . . . . . . . l . . . .
SL . . . . . . . . . . . . .
IMP L . H . . . . . . . . . .
Summer POOL . . . . . . . . . . l . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . . . . .
SL . . . . . . . . . . . . .
IMP . . . . . . . . . . . H h
Fall POOL . . . L h . . . . . . h .
MC . . . l h . . . . . . h .
SC . . . . . . . . . . . h .
BWC . . . L . . . L H H . . h
SL . . . L L L L L . . . . .
IMP . . . L . . . . H H . H H
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
Open River Winter POOL . . . . . . . . . . L . .
MC . . . . . . . . . . l . .
SC . . . . . . . . . . . . .
Spring POOL . . . . . . . . . . . . .
MC . . . . . . . . . . . . .
SC l . . . . . . . . . . . .
Summer POOL . . . . . . . . . . L . .
MC . . . . . . . . . . l . .
SC . . . . . . . . . . . . .
Fall POOL . . . L . . . . H H L . .
MC . . . L . . . . H H L . .
SC . . . L . h H . H H . H .
  TEMP DO COND pH TURB SS VSS CHL TN NOX NHX TP SRP
La Grange Winter POOL . . . . . . . . . . . . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . h . . . . . . . . . .
Spring POOL . . . H . . . . . . . . l
MC . . . H . . . . . . . . .
SC . . . H . . . . . . . . .
BWC . . . . . . . . . . . . l
Summer POOL . . . . . . . . L . . . .
MC . . . . . . . . . . . . .
SC . . . . . . . . . . . . .
BWC . . . . . . . . . . l . .
Fall POOL . . . . . . . l . . . . .
MC . l . . h h . . . . . . .
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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