Kansas Real-Time Water Quality

USGS station:	Go to NWISWeb
Constituent:
Time period:
Model Form:

Model Form #1

log₁₀(TP) = - 1.21 + 0.364 log₁₀(TURB)

where:

TP is computed total phosphorus, in milligrams per liter as phosphorus
TURB is turbidity, YSI model 6026, in formazin nephelometric units

Model Calibration

Basic Data

Number of measurements:	69
Mean squared error:	0.014884
Multiple R²:	0.78
Bias correction (smearing) factor:	1.03

Explanatory Variables

Variable	Value	Standard error
Intercept	-1.21	0.0918
log₁₀(TURB)	0.364	0.0445

Correlation Matrix

	Intercept	log₁₀(TURB)
Intercept	1	-0.9691
log₁₀(TURB)	-0.9691	1

Reference

Rasmussen, T.J., Ziegler, A.C., and Rasmussen, P.P., 2005, Estimation of Constituent Concentrations, Densities, Loads, and Yields in Lower Kansas River, Northeast Kansas, Using Regression Models and Continuous Water-Quality Monitoring, January 2000 Through December 2003: U.S. Geological Survey Scientific Investigations Report 2005-5165, 117 p.

Notes

not an exact match for the cited model, which is: logTP = 0.335log(Turb, YSI 6026)-1.17 MSE= Â Â Â Â Â Â Â Â Â Â .0149 R2= Â Â Â Â Â Â Â Â Â Â .68 n= Â Â Â Â Â Â Â Â Â Â 29(0) Bias= Â Â Â Â Â Â Â Â Â Â 1.04