Colorado Real-time Water Quality Surrogates


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Linard, J.I., Schaffrath, K.R., 2014, Regression models for estimating salinity and selenium concentrations at selected sites in the upper Colorado River Basin, Colorado: 2009 - 2012 (in publication process): U.S. Geological Survey Open File Report 2014-1015, 28 p.

Station Constituent Model Form n R2 BCF Standard Errors of Coefficeints Correlation Matrix Lower-Left
09136100 Selenium ln(Se) = - 6.387 + 1.0764 ln(SC) 16 0.986016 1.005 0.2171, 0.0331 -0.9922
09144250 Selenium ln(Se) = - 8.9887 + 1.545 ln(SC) 9 0.972587 1.008 0.7978, 0.1275 -0.9982
09147500 Selenium ln(Se) = - 9.5214 + 1.4805 ln(SC) 10 0.930232 1.004 2.0051, 0.3212 -0.9996
09149500 Selenium ln(Se) = - 10.985 + 1.8861 ln(SC) + 0.2214 sin(2π D / 365) - 0.0909 cos(2π D / 365) 10 0.930232 1.004 1.4854, 0.2098, 0.0804, 0.0612 -0.9997, -0.7385, 0.7397, 0.4494, -0.4438, -0.3114
09152500 Selenium ln(Se) = - 7.868 + 1.4053 ln(SC) + 0.0418 sin(2π D / 365) + 0.1408 cos(2π D / 365) 16 0.909488 1.006 1.2724, 0.192, 0.066, 0.0619 -0.9996, -0.7375, 0.7351, 0.5787, -0.575, -0.4884
09163500 Selenium ln(Se) = - 6.0433 + 1.053 ln(SC) - 0.092 sin(2π D / 365) - 0.1049 cos(2π D / 365) 18 0.956 1.003 0.6665, 0.0982, 0.0523, 0.0401 -0.9995, -0.6566, 0.6583, 0.7871, -0.7883, -0.5403
09169500 Diss. solids ln(DSR) = - 0.7738 + 1.0322 ln(SC) 16 0.9693 1.002 0.3102, 0.0474 -0.9984
09171100 Diss. solids ln(DSR) = - 0.5358 + 0.9931 ln(SC) 15 0.9824 1.004 0.2645, 0.0355 -0.9954
09251000 Diss. solids ln(DSR) = - 1.37138 + 0.0168 ln(Q) + 1.1239 ln(SC) 66 0.999 1.0005 0.0881, 0.0041, 0.0115 -0.7326, -0.968, 0.5426
09251000 Load diss. solids ln(LDS) = - 7.287 + 1.0168 ln(Q) + 1.1239 ln(SC) 66 0.999 1.0005 0.0881, 0.0041, 0.0115 -0.7326, -0.968, 0.5426
09306200 Diss. solids ln(DSR) = 7.5371 - 0.2226 ln(Q) 12 0.9424 1 0.054, 0.0172 -0.9644
09306222 Diss. solids ln(DSR) = 8.1063 - 0.3043 ln(Q) 12 0.929 1 0.0874, 0.0266 -0.9631
09306255 Diss. solids ln(DSR) = 0.3078 + 0.917 ln(SC) 12 0.9777 1 0.3425, 0.0418 -0.9998

U.S. Bureau of Reclamation, 2013, U.S. Bureau of Reclamation, 2013, Quality of Water Colorado River Basin Progress Report No. 24: U.S. Department of Interior, Bureau of Reclamation, Upper Colorado Region

Station Constituent Model Form n R2 BCF Standard Errors of Coefficeints Correlation Matrix Lower-Left
09071750 Diss. solids ln(DSR) = - 1.57139 + 0.0556 ln(Q) + 1.0927 ln(SC) 66 0.9944 1.0004 0.584, 0.0306, 0.0564 -0.996, -0.9984, 0.9894
09071750 Load diss. solids ln(LDS) = - 7.487 + 1.0556 ln(Q) + 1.0927 ln(SC) 66 0.9944 1.0004 0.584, 0.0306, 0.0564 -0.996, -0.9984, 0.9894
09095500 Diss. solids ln(DSR) = 0.652315 - 0.0732 ln(Q) + 0.9063 ln(SC) 50 0.9954 1.0003 0.8159, 0.0429, 0.0703 -0.9988, -0.9993, 0.9963
09095500 Load diss. solids ln(LDS) = - 5.2633 + 0.9268 ln(Q) + 0.9063 ln(SC) 50 0.9954 1.0003 0.8159, 0.0429, 0.0703 -0.9988, -0.9993, 0.9963
09152500 Diss. solids ln(DSR) = - 0.983786 - 0.0124 ln(Q) + 1.104 ln(SC) 16 0.909488 1.006 0.2178, 0.0114, 0.022 -0.8958, -0.964, 0.764
09152500 Load diss. solids ln(LDS) = - 6.8994 + 0.9876 ln(Q) + 1.104 ln(SC) 16 0.909488 1.006 0.2178, 0.0114, 0.022 -0.8958, -0.964, 0.764