Kansas Real-Time Water Quality

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

Model Form #1

TKN = 0.863 + 0.00232 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 Archive Summary

The model archive summary for computed total org. N + NH3 can be viewed in pdf form here.

Model Calibration

Basic Data

Number of measurements:	39
Mean squared error:	0.26286129
Multiple R²:	0.7425
Bias correction (smearing) factor:	1

Explanatory Variables

Variable	Value	Standard error
Intercept	0.863	0.1105
TURB	0.00232	0.0002

Correlation Matrix

	Intercept	TURB
Intercept	1	-0.6696
TURB	-0.6696	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.