Kansas Real-Time Water Quality

Kansas Real-Time Water Quality

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

Model Form #1

TIN = - 2.04 + 0.914 log₁₀(Q) - 0.541 log₁₀(TEMP)

where:

TIN is computed diss. nitrate + nitrite, in milligrams per liter as nitrogen
Q is computed discharge, stage-discharge rating curve, in cubic feet per second
TEMP is water temperature, in degrees Celsius

Model Calibration

Basic Data

Number of measurements:	34
Mean squared error:	0.09759376
Multiple R²:	0.69
Bias correction (smearing) factor:	1

Explanatory Variables

Variable	Value	Standard error
Intercept	-2.04	0.4169
log₁₀(Q)	0.914	0.1176
log₁₀(TEMP)	-0.541	0.1244

Correlation Matrix

	Intercept	log₁₀(Q)	log₁₀(TEMP)
Intercept	1	-0.9271	-0.163
log₁₀(Q)	-0.9271	1	-0.1965
log₁₀(TEMP)	-0.163	-0.1965	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.