At this site, real-time estimates of water quality depend on the availability of instantaneous discharge and specific conductivity measurements. During winter months, real-time water quality estimates may not be available for this site due to effects of ice.
Model Form #1
ln(LDS) =
- 6.8654 + 0.9805 ln(Q)
+ 1.0992 ln(SC)
where:
- LDS is computed load diss. solids, in tons per day
- Q is computed discharge, stage-discharge rating curve, in cubic feet per second
- SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter
Model Calibration
Basic Data
| Number of measurements: | 132 |
|---|---|
| Mean squared error: | 0.00086436 |
| Multiple R2: | 0.9957 |
| Bias correction (smearing) factor: | 1.0004 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | -6.8654 | 0.149 | ln(Q) | 0.9805 | 0.0062 | ln(SC) | 1.0992 | 0.0192 |
Correlation Matrix
| Intercept | ln(Q) | ln(SC) | |
|---|---|---|---|
| Intercept | 1 | -0.7922 | -0.9728 |
| ln(Q) | -0.7922 | 1 | 0.6301 |
| ln(SC) | -0.9728 | 0.6301 | 1 |
Reference
- 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.