Kansas Real-Time Water Quality

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

Model Form #1

log₁₀(ECB) = 0.111 + 1.17 log₁₀(TURB)

where:

ECB is computed E. coli, in colonies per 100 milliliters
TURB is turbidity, YSI model 6026, in formazin nephelometric units

Model Archive Summary

The model archive summary for computed E. coli can be viewed in pdf form here.

Model Calibration

Basic Data

Number of measurements:	28
Mean squared error:	0.277729
Multiple R²:	0.73
Bias correction (smearing) factor:	1.88

Explanatory Variables

Variable	Value	Standard error
Intercept	0.111	0.304
log₁₀(TURB)	1.17	0.1395

Correlation Matrix

	Intercept	log₁₀(TURB)
Intercept	1	-0.9448
log₁₀(TURB)	-0.9448	1

Reference

Rasmussen, P.P., and Ziegler, A.C., 2003, Comparison and Continuous Estimates of Fecal Coliform and Escherichia Coli Bacteria in Selected Kansas Streams, May 1999 Through April 2002: U.S. Geological Survey Water-Resources Investigations Report 03-4056, 80 p.

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.