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 #3

log₁₀(DOP) = - 1.9784 + 0.4942 log₁₀(TURB) + 0.0189 TEMP - 0.5408 log₁₀(TChl)

where:

DOP is computed diss. orthophosphorus, in milligrams per liter as phosphorus
TURB is turbidity, YSI model 6136, in formazin nephelometric units
TEMP is water temperature, in degrees Celsius
TChl is total chlorophyll, in micrograms per liter as chlorophyll

Model Calibration

Basic Data

Number of measurements:	113
Mean squared error:	0.07086244
Multiple R²:	0.66
Bias correction (smearing) factor:	1.1761

Explanatory Variables

Variable	Value	Standard error
Intercept	-1.9784	0.1788
log₁₀(TURB)	0.4942	0.1023
TEMP	0.0189	0.0036
log₁₀(TChl)	-0.5408	0.1116

Correlation Matrix

	Intercept	log₁₀(TURB)	TEMP	log₁₀(TChl)
Intercept	1	-0.5819	-0.3155	-0.7961
log₁₀(TURB)	-0.5819	1	-0.4206	0.0719
TEMP	-0.3155	-0.4206	1	0.4377
log₁₀(TChl)	-0.7961	0.0719	0.4377	1

Reference

Stone, M.L., Graham, J.L., and Gatotho, J.W., 2013, Model Documentation for Relations Between Continuous Real-Time and Discrete Water-Quality Constituents in Cheney Reservoir near Cheney, Kansas, 2001-2009: U.S. Geological Survey Open File Report 2013-1123, 100 p.