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Maryland Real-Time Water Quality
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01649500
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Model Info
USGS station:
01649190 Paint Branch Near College Park, MD
01649500 Northeast Branch Anacostia River at Riverdale, MD
01651000 Northwest Branch Anacostia River near Hyattsville, MD
01658000 Mattawoman Creek near Pomonkey, MD (discontinued July 2011)
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Constituent:
Computed discharge
Specific conductance at 25 degrees Celsius
pH
Water temperature
Turbidity
Diss. oxygen
Computed total nitrogen, 2007-2018
Computed total phosphorus, 2004-2005
Computed total phosphorous, 2007-2018
Computed E. coli, 2007-2018
Computed suspended sediment, 2004-2005
Computed suspended sediment, 2007-2018
concentration
load
hourly
daily
Time period:
Year 2018
Year 2017
Year 2016
Year 2015
Year 2014
Year 2013
Year 2012
Year 2011
Year 2010
Year 2009
Year 2008
Year 2007
All
Month
1st Quarter (Jan-Mar)
2nd Quarter (Apr-Jun)
3rd Quarter (Jul-Sep)
4th Quarter (Oct-Dec)
Model Form:
1. 2013-01-01 - 2018-12-31
Model Form #1
log
10
(
TPR
) = - 1.7717 + 0.5303 log
10
(
TURB
)
where:
TPR
is computed total phosphorous, in milligrams per liter
TURB
is turbidity, in formazin nephelometric units
Model Calibration
Basic Data
Number of measurements:
167
Mean squared error:
0.02927521
Multiple R
2
:
0.8584
Bias correction (smearing) factor:
1.09
Explanatory Variables
Variable
Value
Standard error
Intercept
-1.7717
0.0341
log
10
(
TURB
)
0.5303
0.0168
Correlation Matrix
Intercept
log
10
(
TURB
)
Intercept
1
-0.9216
log
10
(
TURB
)
-0.9216
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.
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