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(ECBR) = 1.4938 + 0.8226 log₁₀(TURB) + 0.0369 TEMP

where:

ECBR is computed E. coli, in colonies per 100 milliliters
TURB is turbidity, in formazin nephelometric units
TEMP is water temperature, in degrees Celsius

Model Calibration

Basic Data

Number of measurements:	146
Mean squared error:	0.18870336
Multiple R²:	0.7727
Bias correction (smearing) factor:	1.66

Explanatory Variables

Variable	Value	Standard error
Intercept	1.4938	0.1095
log₁₀(TURB)	0.8226	0.0416
TEMP	0.0369	0.0052

Correlation Matrix

	Intercept	log₁₀(TURB)	TEMP
Intercept	1	-0.5356	-0.7038
log₁₀(TURB)	-0.5356	1	-0.1268
TEMP	-0.7038	-0.1268	1

Reference

Miller, C.V., Chanat, J.G., and Bell, J.M., 2013, Water quality in the Anacostia River, Maryland and Rock Creek, Washington, D.C.: Continuous and discrete monitoring with simulations to estimate concentrations and yields of nutrients, suspended sediment, and bacteria: U.S. Geological Survey Open-File Report 2013–1034, 37 p.