Kansas Real-Time Water Quality

Kansas Real-Time Water Quality

NRTWQ Home >> Kansas >> View Data >> 07143672

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

Model Form #1

Ca = 2.34 + 0.087 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:	157
Mean squared error:	101.6064
Multiple R²:	0.9551
Bias correction (smearing) factor:	1

Explanatory Variables

Variable	Value	Standard error
Intercept	2.34	1.6521
SC	0.087	0.0015

Correlation Matrix

	Intercept	SC
Intercept	1	-0.8734
SC	-0.8734	1

Reference

Christensen, V.G., Ziegler, A.C., Rasmussen, P.P., and Jian, Xiaodong, 2003, Continuous Real-Time Water-Quality Monitoring of Kansas Streams, in Proceedings of 2003 Spring Specialty Conference on Agricultural Hydrology and Water Quality, May 12-14, 2003, Kansas City, Missouri: Middleburg, Virginia, American Water Resources Association, AWRA Technical Publication Series No. TPS-03-1, compact disc.

Notes

Old model used through 2006.