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 #1

log₁₀(Pdis) = 1.0851 - 0.8764 log₁₀(DO) - 0.0019 SC - 0.0137 TChl

where:

Pdis is computed dissolved phosphorus, in milligrams per liter
DO is diss. oxygen, in milligrams per liter
SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter
TChl is total chlorophyll, in micrograms per liter as chlorophyll

Model Calibration

Basic Data

Number of measurements:	109
Mean squared error:	0.04227136
Multiple R²:	0.59
Bias correction (smearing) factor:	1.1029

Explanatory Variables

Variable	Value	Standard error
Intercept	1.0851	0.3671
log₁₀(DO)	-0.8764	0.2121
SC	-0.0019	0.0005
TChl	-0.0137	0.0035

Correlation Matrix

	Intercept	log₁₀(DO)	SC	TChl
Intercept	1	0.0879	-0.9058	0.1305
log₁₀(DO)	0.0879	1	-0.4928	-0.5342
SC	-0.9058	-0.4928	1	0.048
TChl	0.1305	-0.5342	0.048	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.