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New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here.

This legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  NWIS >  USGS-VA >  USGS-01668000

RAPPAHANNOCK RIVER NEAR FREDERICKSBURG, VA (USGS-01668000) site data in the Water Quality Portal

Data Provider: NWIS (Learn more about Water Quality Portal Data Providers)

This stream site, maintained by the USGS Virginia Water Science Center (identifier USGS-VA), has the name "RAPPAHANNOCK RIVER NEAR FREDERICKSBURG, VA" and has the identifier USGS-01668000. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)02080104. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 1595 sq mi.

This site is located in Spotsylvania County County, Virginia at 38.30846178000000 degrees latitude and -77.5291526800000 degrees longitude using the datum NAD83. The horizontal location collection method was "Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)" and the accuracy is 1 seconds. The source map scale is 1:24000. This site is at an elevation of 63.69 feet and the accuracy of the elevation measurement, collected using the method "GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System" is 0.1 feet. The vertical coordinate reference system is NAVD88.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-01668000" into the "Site ID" box under Site Parameters

What other monitoring locations are upstream or downstream from this one?

Upstream and downstream locations

This map shows all Water Quality Portal stations that are 10 miles upstream (dashed dark blue) and 10 miles downstream (solid light blue) of this monitoring location (indicated by the large blue circle). The upstream and downstream functionality is provided by the Network Linked Data Index.

When were data collected at this location?

Periods of record for data characteristic groups

For a more detailed breakdown of data, go to the Monitoring Report at the EPA How's My Waterway Application
Characteristic Group Date Range*
Biological, Algae, Cyanobacteria 2003 - 2023
Biological, Algae, Phytoplankton 1978 - 1995
Biological, Algae, Phytoplankton, Cyanobacteria, Periphyton 1980 - 1980
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1979 - 2023
Biological, Counts 1978 - 1981
Biological, Fish 1995 - 1995
Biological, Photosynthetic Pigments 1979 - 1980
Information 2002 - 2024
Inorganics, Major, Metals 1967 - 1994
Inorganics, Major, Non-metals 1967 - 2024
Inorganics, Minor, Metals 1967 - 1994
Inorganics, Minor, Non-metals 1977 - 1994
Microbiological 1977 - 1994
Nutrient 1967 - 2023
Organics, Other 1977 - 2023
Physical 1967 - 2024
Radiochemical 1981 - 1981
Sediment 1977 - 2022
*Date ranges may contain gap years

What other information is available for this location?

Detailed Metadata

For the definitions of the metadata elements, please go to the Water Quality Portal user guide

Location Metadata Value
OrganizationIdentifier USGS-VA
OrganizationFormalName USGS Virginia Water Science Center
MonitoringLocationIdentifier USGS-01668000
MonitoringLocationName RAPPAHANNOCK RIVER NEAR FREDERICKSBURG, VA
MonitoringLocationTypeName Stream
HUCEightDigitCode 02080104
DrainageAreaMeasure/MeasureValue 1595
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 38.30846178000000
LongitudeMeasure -77.5291526800000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 63.69
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 0.1
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 51
CountyCode 177
ProviderName NWIS