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

log₁₀(NO3) = 0.028 + 0.23 log₁₀(TURB) - 0.0306 TEMP

where:

NO3 is computed diss. nitrate, in milligrams per liter as nitrogen
TURB is turbidity, YSI model 6136, in formazin nephelometric units
TEMP is water temperature, in degrees Celsius

Model Calibration

Basic Data

Number of measurements:	134
Mean squared error:	0.1160015481
Multiple R²:	0.32
Bias correction (smearing) factor:	1.333

Explanatory Variables

Variable	Value	Standard error
Intercept	0.028	0.094294
log₁₀(TURB)	0.23	0.04502
TEMP	-0.0306	0.004093

Correlation Matrix

	Intercept	log₁₀(TURB)	TEMP
Intercept	1	-0.6843	-0.37886
log₁₀(TURB)	-0.6843	1	-0.34922
TEMP	-0.37886	-0.34922	1

Reference

Christensen, V.G., Ziegler, A.C., Rasmussen, P.P., and Jian, Xiaodong, 2003, Continuous Real-Time Water-Quality Monitoring of Kansas Streams, in Proceedings of 2003 Spring Specialty Conference on Agricultural Hydrology and Water Quality, May 12-14, 2003, Kansas City, Missouri: Middleburg, Virginia, American Water Resources Association, AWRA Technical Publication Series No. TPS-03-1, compact disc.

Notes

New calculated parameter started in 2011.