Limited availability of new USGS data; starting March 11th, 2024, there will be a period when new USGS data will not be accessible on the Water Quality Portal. Data will still be collected but will not be publicly available. This limited availability is expected to last a few weeks.
Recent USGS data will be accessible again upon release of the new Data Profiles, which will be in the WQX 3.0 format. These profiles should be available in April, 2024. Please keep an eye on banners on this website for announcements.

WQP Home >  Providers >  STORET >  CORIVWCH_WQX >  CORIVWCH_WQX-600

Left Hand Cr - Big Five Tunnel Drainage (CORIVWCH_WQX-600) site data in the Water Quality Portal

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

This mine/mine discharge adit (mine entrance) site, maintained by the Colorado River Watch (identifier CORIVWCH_WQX), has the name "Left Hand Cr - Big Five Tunnel Drainage" and has the identifier CORIVWCH_WQX-600. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)10190005.

This site is located in Boulder County County, Colorado at 40.0637000000 degrees latitude and -105.5107000000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 8924 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-600" 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 2011 - 2012
Inorganics, Minor, Metals 2011 - 2012
Inorganics, Minor, Non-metals 2011 - 2012
Physical 2011 - 2012
*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
MonitoringLocationIdentifier CORIVWCH_WQX-600
MonitoringLocationName Left Hand Cr - Big Five Tunnel Drainage
MonitoringLocationTypeName Mine/Mine Discharge Adit (Mine Entrance)
MonitoringLocationDescriptionText Travel on Lefthand Cyn Dr or US-36 to the jct of Sawmill Rd, Lefthand Cyn Dr and California Gulch Rd (1 mile south of Ward). California Gulch Rd is the unmarked gravel rd leading NW from this jct - follow it 0.9 miles to the end. Sample site is at the entrance to the Big Five Tunnel, from which the mine drainage water flows.
HUCEightDigitCode 10190005
LatitudeMeasure 40.0637000000
LongitudeMeasure -105.5107000000
SourceMapScaleNumeric 160000
HorizontalCollectionMethodName Interpolation-Map
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 8924
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName SEALV
CountryCode US
StateCode 08
CountyCode 013
ProviderName STORET