Search
Search
Maryland Real-Time Water Quality
Home
View Data
Methods
Constituents
Models
Bibliography
Links
NRTWQ Home
>>
Maryland
>>
View Data
>>
01649500
Plot
Data Table
Statistics
Duration Curve
Site Info
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)
Go to NWISWeb
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
(
TNR
) = - 0.0688 + 0.1816 log
10
(
TURB
)
where:
TNR
is computed total nitrogen, in milligrams per liter as nitrogen
TURB
is turbidity, in formazin nephelometric units
Model Calibration
Basic Data
Number of measurements:
166
Mean squared error:
0.01729225
Multiple R
2
:
0.5459
Bias correction (smearing) factor:
1.05
Explanatory Variables
Variable
Value
Standard error
Intercept
-0.0688
0.0262
log
10
(
TURB
)
0.1816
0.0129
Correlation Matrix
Intercept
log
10
(
TURB
)
Intercept
1
-0.9211
log
10
(
TURB
)
-0.9211
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.
Go to NWISWeb
