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Grayling Creek at Hwy 287 bridge (MTNWE-MM-30) site data in the Water Quality Portal

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

This river/stream site, maintained by the MTNWE - Montana NorthWestern Energy (identifier MTNWE), has the name "Grayling Creek at Hwy 287 bridge" and has the identifier MTNWE-MM-30. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10020007.

This site is located in Gallatin County County, Montana at 44.7961700000 degrees latitude and -111.1528400000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "MTNWE-MM-30" 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 2005 - 2011
Inorganics, Major, Non-metals 2005 - 2011
Inorganics, Minor, Metals 2011 - 2011
Inorganics, Minor, Non-metals 2005 - 2011
Nutrient 2005 - 2011
Physical 2005 - 2013
*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 MTNWE
OrganizationFormalName MTNWE - Montana NorthWestern Energy
MonitoringLocationIdentifier MTNWE-MM-30
MonitoringLocationName Grayling Creek at Hwy 287 bridge
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Grayling Creek at Hwy 287 bridge
HUCEightDigitCode 10020007
LatitudeMeasure 44.7961700000
LongitudeMeasure -111.1528400000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Interpolation-Digital Map Source (Tiger)
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 30
CountyCode 031
ProviderName STORET