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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 >  21COL001 >  21COL001-10818A

MARSHALL CREEK AT MOUTH (21COL001-10818A) 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 Colorado Dept. of Public Health & Environment (identifier 21COL001), has the name "MARSHALL CREEK AT MOUTH" and has the identifier 21COL001-10818A. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)14030003.

This site is located in San Miguel County County, Colorado at 37.9304000 degrees latitude and -107.7807600 degrees longitude using the datum NAD27. No horizontal location accuracy metadata is available. This site is at an elevation of 8936 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 "21COL001-10818A" 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, Non-metals 2004 - 2005
Inorganics, Minor, Metals 2004 - 2005
Inorganics, Minor, Non-metals 2004 - 2005
Microbiological 2004 - 2005
Nutrient 2004 - 2005
Physical 2004 - 2005
Radiochemical 2004 - 2004
*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 21COL001
OrganizationFormalName Colorado Dept. of Public Health & Environment
MonitoringLocationIdentifier 21COL001-10818A
MonitoringLocationName MARSHALL CREEK AT MOUTH
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText 2.0 mi. east of Telluride (Courthouse) on Main Road to Idarado Mine/Mill Entrance. Creek crosses Main Road just before Entrance. Hike 0.2mi south along Creek. Samples collected about 30 meters above confluence with the San Miguel River.
HUCEightDigitCode 14030003
LatitudeMeasure 37.9304000
LongitudeMeasure -107.7807600
HorizontalCollectionMethodName GPS Code (Pseudo Range) Standard Position (SA Off)
HorizontalCoordinateReferenceSystemDatumName NAD27
VerticalMeasure/MeasureValue 8936
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName GPS Code (Pseudo Range) Standard Position (SA Off)
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 08
CountyCode 113
ProviderName STORET