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 >  21COL001 >  21COL001-000030

ST VRAIN R AT WELD BOULDER COUNTY LINE (21COL001-000030) 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 "ST VRAIN R AT WELD BOULDER COUNTY LINE" and has the identifier 21COL001-000030. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10190005.

This site is located in Weld County County, Colorado at 40.1500000 degrees latitude and -105.0500000 degrees longitude using the datum UNKWN. 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 "21COL001-000030" 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 1968 - 1969
Inorganics, Major, Non-metals 1968 - 1969
Inorganics, Minor, Metals 1968 - 1969
Inorganics, Minor, Non-metals 1968 - 1969
Microbiological 1968 - 1969
Not Assigned 1969 - 1969
Nutrient 1969 - 1969
Organics, Other 1968 - 1969
Physical 1968 - 1969
Radiochemical 1968 - 1969
*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 21COL001-000030
MonitoringLocationName ST VRAIN R AT WELD BOULDER COUNTY LINE
MonitoringLocationTypeName River/Stream
HUCEightDigitCode 10190005
LatitudeMeasure 40.1500000
LongitudeMeasure -105.0500000
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 08
CountyCode 123
ProviderName STORET