Kansas Real-Time Water Quality

Kansas Real-Time Water Quality

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

Funding to maintain the continuous water-quality monitor at this site ended on December 31, 2003.

Model Form #1

TP = 0.776 + 0.0057 TEMP - 0.227 log₁₀(SC) + 0.00103 TURB

where:

TP is computed total phosphorus, in milligrams per liter as phosphorus
TEMP is water temperature, in degrees Celsius
SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter
TURB is turbidity, YSI model 6026, in formazin nephelometric units

Model Calibration

Basic Data

Number of measurements:	20
Mean squared error:	0.0017867529
Multiple R²:	0.96
Bias correction (smearing) factor:	1

Explanatory Variables

Variable	Value	Standard error
Intercept	0.776	0.116458
TEMP	0.0057	0.0012489
log₁₀(SC)	-0.227	0.0329483
TURB	0.00103	0.0001061

Correlation Matrix

	Intercept	TEMP	log₁₀(SC)	TURB
Intercept	1	0.0746053	-0.97546	-0.652923
TEMP	0.0746053	1	-0.255771	-0.301523
log₁₀(SC)	-0.97546	-0.255771	1	0.621176
TURB	-0.652923	-0.301523	0.621176	1

Reference

Christensen, V.G., 2001, Characterization of Surface-Water Quality Based on Real-Time Monitoring and Regression Analysis, Quivira National Wildlife Refuge, South-Central Kansas, December 1998 Through June 2001: U.S. Geological Survey Water-Resources Investigations Report 01-4248, 28 p.