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 >  21COL001-8304

RIO GRANDE R BLW ALAMOSA (21COL001-8304) 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 "RIO GRANDE R BLW ALAMOSA" and has the identifier 21COL001-8304. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)13010002.

This site is located in Alamosa County County, Colorado at 37.4383500 degrees latitude and -105.8025000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 0 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 "21COL001-8304" 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 2005 - 2006
Inorganics, Minor, Metals 2005 - 2006
Inorganics, Minor, Non-metals 2005 - 2006
Microbiological 2005 - 2006
Nutrient 2005 - 2006
Physical 2005 - 2006
Radiochemical 2006 - 2006
*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 21COL001-8304
MonitoringLocationName RIO GRANDE R BLW ALAMOSA
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText From Alamosa take Hwy 160 east to S-113 Rd (El Rancho Lane). Follow south 2.5 miles. Go around refuge building and look for Rio Grande River walking trail sign. Sample from river, not ditch.
HUCEightDigitCode 13010002
LatitudeMeasure 37.4383500
LongitudeMeasure -105.8025000
HorizontalCollectionMethodName GPS Code (Pseudo Range) Standard Position (SA Off)
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 0
VerticalMeasure/MeasureUnitCode ft
VerticalCoordinateReferenceSystemDatumName Unknown
CountryCode US
StateCode 08
CountyCode 003
ProviderName STORET