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(HARD) = - 0.554 + 1.011 log₁₀(SC)

where:

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

Model Archive Summary

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

Model Calibration

Basic Data

Number of measurements:	191
Mean squared error:	0.00379456
Multiple R²:	0.97
Bias correction (smearing) factor:	1.01

Explanatory Variables

Variable	Value	Standard error
Intercept	-0.554	0.0366
log₁₀(SC)	1.011	0.0133

Correlation Matrix

	Intercept	log₁₀(SC)
Intercept	1	-0.992
log₁₀(SC)	-0.992	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.