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 legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  NWIS >  USGS-CO >  USGS-374623105295901

CASTLE CR AT BOUNDARY AT GR SAND DUNES NAT MON, CO (USGS-374623105295901) site data in the Water Quality Portal

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

This stream site, maintained by the USGS Colorado Water Science Center (identifier USGS-CO), has the name "CASTLE CR AT BOUNDARY AT GR SAND DUNES NAT MON, CO" and has the identifier USGS-374623105295901. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)13010003. See more details of this site the the USGS NWIS Web page for this site.

This site is located in Saguache County County, Colorado at 37.77305650000000 degrees latitude and -105.5002886000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)" and the accuracy is 1 seconds.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-374623105295901" 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*
Information 1999 - 2000
Inorganics, Major, Metals 1999 - 2000
Inorganics, Major, Non-metals 1999 - 2000
Inorganics, Minor, Metals 1999 - 2000
Inorganics, Minor, Non-metals 1999 - 2000
Nutrient 1999 - 2000
Physical 1999 - 2000
*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 USGS-CO
OrganizationFormalName USGS Colorado Water Science Center
MonitoringLocationIdentifier USGS-374623105295901
MonitoringLocationName CASTLE CR AT BOUNDARY AT GR SAND DUNES NAT MON, CO
MonitoringLocationTypeName Stream
HUCEightDigitCode 13010003
LatitudeMeasure 37.77305650000000
LongitudeMeasure -105.5002886000000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 08
CountyCode 109
ProviderName NWIS