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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 >  CORIVWCH_WQX >  CORIVWCH_WQX-394

West Arm Ditch - West Arm Ditch (CORIVWCH_WQX-394) site data in the Water Quality Portal

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

This canal irrigation site, maintained by the Colorado River Watch (Volunteer) (identifier CORIVWCH_WQX), has the name "West Arm Ditch - West Arm Ditch" and has the identifier CORIVWCH_WQX-394. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)14020006.

This site is located in Ouray County County, Colorado at 38.1198000000 degrees latitude and -107.7318000000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 7020 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 "CORIVWCH_WQX-394" 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 2000 - 2000
Inorganics, Minor, Metals 2000 - 2000
Inorganics, Minor, Non-metals 2000 - 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 CORIVWCH_WQX
OrganizationFormalName Colorado River Watch (Volunteer)
MonitoringLocationIdentifier CORIVWCH_WQX-394
MonitoringLocationName West Arm Ditch - West Arm Ditch
MonitoringLocationTypeName Canal Irrigation
MonitoringLocationDescriptionText 3.7 miles south of Ridgeway on hwy 550 is turnoff for Potter's Ranch. Turn west off of Hwy 550 and travel about 1/2 mile to bridge. Ditch comes into Uncompahgre just above bridge on west side. Sample at confluence
HUCEightDigitCode 14020006
LatitudeMeasure 38.1198000000
LongitudeMeasure -107.7318000000
SourceMapScaleNumeric 160000
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 7020
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName SEALV
CountryCode US
StateCode 08
CountyCode 091
ProviderName STORET