Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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-GRKO_UM_GKM01_1RED

Grant Kohrs Mult-Level Sampler Site 1 Red (6.58 feet) (11NPSWRD_WQX-GRKO_UM_GKM01_1RED) site data in the Water Quality Portal

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

This well site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Grant Kohrs Mult-Level Sampler Site 1 Red (6.58 feet)" and has the identifier 11NPSWRD_WQX-GRKO_UM_GKM01_1RED. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)17010201.

This site is located in Powell County County, Montana at 46.4045200000 degrees latitude and -112.7447000000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 1371.063 m No vertical location accuracy metadata is available.

The well hole depth is 6.58 ft.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "11NPSWRD_WQX-GRKO_UM_GKM01_1RED" 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 2000 - 2000
Inorganics, Major, Non-metals 2000 - 2000
Inorganics, Minor, Metals 2000 - 2000
Inorganics, Minor, Non-metals 2000 - 2000
Nutrient 2000 - 2000
Physical 2000 - 2001
*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-GRKO_UM_GKM01_1RED
MonitoringLocationName Grant Kohrs Mult-Level Sampler Site 1 Red (6.58 feet)
MonitoringLocationTypeName Well
MonitoringLocationDescriptionText Multi-level well sampling site. The well is located on left bank of the Clark Fork River flood plain within Grant-Kohrs Ranch National Historic Site. This site consists of five wells installed at multiple levels; GKM-1W has a depth of 9.08 feet, GKM-1RED has a depth of 6.58 feet, GKM-1BLUE has a depth of 5.08 feet, GKM-1GREEN has a depth of 3.58 feet, and GKM-1YELLOW has a depth of 2.08 feet. The site is referred to as GKM-1.
HUCEightDigitCode 17010201
LatitudeMeasure 46.4045200000
LongitudeMeasure -112.7447000000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName GPS Code (Pseudo Range) Differential
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 1371.063
VerticalMeasure/MeasureUnitCode m
VerticalCollectionMethodName Classical Surveying Techniques
VerticalCoordinateReferenceSystemDatumName SEALV
CountryCode US
StateCode 30
CountyCode 077
WellHoleDepthMeasure/MeasureValue 6.58
WellHoleDepthMeasure/MeasureUnitCode ft
ProviderName STORET