Maryland Real-Time Water Quality

Maryland Real-Time Water Quality

NRTWQ Home >> Maryland >> View Data >> 01649500

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

Model Form #1

log₁₀(TP) = - 2.0342 + 0.2798 log₁₀(TURB) + 0.2924 log₁₀(Q)

where:

TP is computed total phosphorus, in milligrams per liter as phosphorus
TURB is turbidity, in formazin nephelometric units
Q is computed discharge, stage-discharge rating curve, in cubic feet per second

Model Calibration

Basic Data

Number of measurements:	64
Mean squared error:	0.02762244
Multiple R²:	0.88
Bias correction (smearing) factor:	1.04

Explanatory Variables

Variable	Value	Standard error
Intercept	-2.0342	0.1018
log₁₀(TURB)	0.2798	0.0555
log₁₀(Q)	0.2924	0.0679

Correlation Matrix

	Intercept	log₁₀(TURB)	log₁₀(Q)
Intercept	1	0.6327	-0.8948
log₁₀(TURB)	0.6327	1	-0.9002
log₁₀(Q)	-0.8948	-0.9002	1

Reference

Miller, C.V., Gutierrez-Magness, A.L., Feit Majedi, B.L., and Foster, G.D., 2007, Water quality in the Upper Anacostia River, Maryland: Continuous and discrete monitoring with simulations to estimate concentrations and yields: U.S. Geological Survey Scientific Investigations Report 2007-5142, 43 p.