Kansas Real-Time Water Quality

Kansas Real-Time Water Quality

NRTWQ Home >> Kansas >> View Data >> 06888990

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

Model Form #1

log₁₀(TKN) = - 0.902 + 0.507 log₁₀(TURB)

where:

TKN is computed total Kjeldahl nitrogen, in milligrams per liter as nitrogen
TURB is turbidity, YSI EXO, in formazin nephelometric units

Model Archive Summary

The model archive summary for computed total Kjeldahl nitrogen can be viewed in pdf form here.

Model Calibration

Basic Data

Number of measurements:	34
Mean squared error:	0.00837225
Multiple R²:	0.922
Bias correction (smearing) factor:	1.02

Explanatory Variables

Variable	Value	Standard error
Intercept	-0.902	0.0517
log₁₀(TURB)	0.507	0.0256

Correlation Matrix

	Intercept	log₁₀(TURB)
Intercept	1	-0.953
log₁₀(TURB)	-0.953	1

Reference

Williams, T.J., 2023, Linear regression model documentation for computing water-quality constituent concentrations or densities using continuous real-time water-quality data for the Kansas River above Topeka Weir at Topeka, Kansas, November 2018 through June 2021: U.S. Geological Survey Scientific Investigations Report 2022-5130, 14 p.