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 #2

log₁₀(Ca) = - 1.12 + 1.03 log₁₀(SC)

where:

Ca is computed calcium, in milligrams per liter as calcium
SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter

Model Archive Summary

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

Model Calibration

Basic Data

Number of measurements:	190
Mean squared error:	0.00398161
Multiple R²:	0.97
Bias correction (smearing) factor:	1.01

Explanatory Variables

Variable	Value	Standard error
Intercept	-1.12	0.0376
log₁₀(SC)	1.03	0.0137

Correlation Matrix

	Intercept	log₁₀(SC)
Intercept	1	-0.993
log₁₀(SC)	-0.993	1

Reference

Stone, M.L., and Klager, B.J., 2022, Documentation of models describing relations between continuous real-time and discrete water-quality constituents in the Little Arkansas River, south-central Kansas, 1998-2019: U.S. Geological Survey Open-File Report 2022-1010, 34 p.