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

log₁₀(ALK) = 0.5086 + 0.646 log₁₀(SC) - 0.102 log₁₀(Q)

where:

ALK is computed alkalinity, in milligrams per liter as calcium carbonate
SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter
Q is computed discharge, stage-discharge rating curve, in cubic feet per second

Model Calibration

Basic Data

Number of measurements:	155
Mean squared error:	0.0048372025
Multiple R²:	0.9487
Bias correction (smearing) factor:	1.01467

Explanatory Variables

Variable	Value	Standard error
Intercept	0.5086	0.1044
log₁₀(SC)	0.646	0.0289
log₁₀(Q)	-0.102	0.0122

Correlation Matrix

	Intercept	log₁₀(SC)	log₁₀(Q)
Intercept	1	-0.9902	-0.8927
log₁₀(SC)	-0.9902	1	0.8287
log₁₀(Q)	-0.8927	0.8287	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.