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 >  21COL001-12853

GRASSY CK @ RD. 27A (21COL001-12853) 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 "GRASSY CK @ RD. 27A" and has the identifier 21COL001-12853. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)14050001.

This site is located in Routt County County, Colorado at 40.4466600 degrees latitude and -107.1458300 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 "21COL001-12853" 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 2001 - 2007
Inorganics, Minor, Metals 2001 - 2007
Inorganics, Minor, Non-metals 2001 - 2007
Microbiological 2001 - 2007
Nutrient 2001 - 2007
Physical 2001 - 2007
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 21COL001-12853
MonitoringLocationName GRASSY CK @ RD. 27A
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText From Oak Creek, take Rd. 27 toward Hayden. Take a right on Rd. 27A and follow about 1 mile. Sample site is below road crossing.
HUCEightDigitCode 14050001
LatitudeMeasure 40.4466600
LongitudeMeasure -107.1458300
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 08
CountyCode 107
ProviderName STORET