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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-GRCA_GS2_CLOF02

Clearwell Overflow (11NPSWRD_WQX-GRCA_GS2_CLOF02) site data in the Water Quality Portal

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

This facility other site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Clearwell Overflow" and has the identifier 11NPSWRD_WQX-GRCA_GS2_CLOF02. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)15010004.

This site is located in Coconino County County, Arizona at 36.0496850000 degrees latitude and -112.1508923000 degrees longitude using the datum NAD27. No horizontal location accuracy metadata is available. This site is at an elevation of 6730 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-GRCA_GS2_CLOF02" 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 2002 - 2002
Inorganics, Major, Non-metals 2002 - 2002
Inorganics, Minor, Metals 2002 - 2002
Inorganics, Minor, Non-metals 2002 - 2002
Nutrient 2002 - 2002
Organics, Other 2002 - 2002
Physical 2002 - 2002
Radiochemical 2002 - 2002
Stable Isotopes 2002 - 2002
*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-GRCA_GS2_CLOF02
MonitoringLocationName Clearwell Overflow
MonitoringLocationTypeName Facility Other
MonitoringLocationDescriptionText The Clearwell Overflow carries discharge from the National Park Service wastewater treatment plant into the Bright Angel Wash. The site is located at the discharge pipe. The site is located on the South Rim, within the boundaries of Grand Canyon National Park.
HUCEightDigitCode 15010004
LatitudeMeasure 36.0496850000
LongitudeMeasure -112.1508923000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName GPS Code (Pseudo Range) Differential
HorizontalCoordinateReferenceSystemDatumName NAD27
VerticalMeasure/MeasureValue 6730
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Other
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 04
CountyCode 005
ProviderName STORET