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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 user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-GRSM_F_0305

Twentymile Creek at Upper Bridge (11NPSWRD_WQX-GRSM_F_0305) site data in the Water Quality Portal

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

This river/stream perennial site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Twentymile Creek at Upper Bridge" and has the identifier 11NPSWRD_WQX-GRSM_F_0305. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)06010204.

This site is located in Swain County County, North Carolina at 35.4814959500 degrees latitude and -83.8448172100 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 2108.6 ft No vertical location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "11NPSWRD_WQX-GRSM_F_0305" 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*
Inorganics, Major, Metals 1994 - 1996
Inorganics, Major, Non-metals 1994 - 1996
Nutrient 1994 - 1996
Physical 1994 - 1996
*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 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-GRSM_F_0305
MonitoringLocationName Twentymile Creek at Upper Bridge
MonitoringLocationTypeName River/Stream Perennial
MonitoringLocationDescriptionText Stream Order: 3 UTMX=241853; UTMY=3929900 Survey Period: 1994-1996 Other: From original park report: Route 17 - Twentymile Creek, Upper Panther Creek and Parsons Branch Road. Site 305 (Old Site 107C) - Twentymile Creek at the first vehicle grade bridge you encounter on the trail, a second bridge is very close to this one - site is at about 2300 ft.
HUCEightDigitCode 06010204
LatitudeMeasure 35.4814959500
LongitudeMeasure -83.8448172100
SourceMapScaleNumeric 24000
HorizontalCollectionMethodName Interpolation-Digital Map Source
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 2108.6
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Other
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 37
CountyCode 173
ProviderName STORET