Virginia Real-Time Water Quality

Virginia Real-Time Water Quality

NRTWQ Home >> Virginia >> View Data >> 01656903

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

Model Form #1

ln(SSR) = - 0.257 + 0.911 ln(TURB) + 0.3 ln(Q)

where:

SSR is computed suspended sediment, in milligrams per liter
TURB is turbidity, YSI model 6136, in formazin nephelometric units
Q is computed discharge, stage-discharge rating curve, in cubic feet per second

Model Calibration

Basic Data

Number of measurements:	242
Mean squared error:	0.47430769
Multiple R²:	0.91
Bias correction (smearing) factor:	1.25

Explanatory Variables

Variable	Value	Standard error
Intercept	-0.257	0.112
ln(TURB)	0.911	0.049
ln(Q)	0.3	0.047

Correlation Matrix

	Intercept	ln(TURB)	ln(Q)
Intercept	1	-0.002	-0.0003
ln(TURB)	-0.002	1	-0.002
ln(Q)	-0.0003	-0.002	1

Reference

Jastram, J.D., 2014, Streamflow, Water Quality, and Aquatic Macroinvertebrates of Selected Streams in Fairfax County, Virginia, 2007–12: U.S. Geological Survey Scientific Investigations Report 2014–5073, 68 p.