Kansas Real-Time Water Quality

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

Model Form #1

log₁₀(TKN) = - 0.816 + 0.439 log₁₀(TURB)

where:

TKN is computed total org. N + NH3, in milligrams per liter as nitrogen
TURB is turbidity, YSI model 6026, in formazin nephelometric units

Model Calibration

Basic Data

Number of measurements:	35
Mean squared error:	0.01270129
Multiple R²:	0.8497
Bias correction (smearing) factor:	1.03434

Explanatory Variables

Variable	Value	Standard error
Intercept	-0.816	0.074
log₁₀(TURB)	0.439	0.0321

Correlation Matrix

	Intercept	log₁₀(TURB)
Intercept	1	-0.9663
log₁₀(TURB)	-0.9663	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

This model is used to compute values at this station only from 1999 through 2006, the range of time when a 6026-model turbidity sensor was used. Beginning in 2007, a 6136-model turibidty sensor was installed, resulting in a change to the model.