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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 >  11NPSWRD_WQX >  11NPSWRD_WQX-PISP_TUSP

Tunnel Spring (Inside + Outside) (11NPSWRD_WQX-PISP_TUSP) site data in the Water Quality Portal

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

This spring site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Tunnel Spring (Inside + Outside)" and has the identifier 11NPSWRD_WQX-PISP_TUSP. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)15010003.

This site is located in Mohave County County, Arizona at 36.8627700000 degrees latitude and -112.7401000000 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 4931.1 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 "11NPSWRD_WQX-PISP_TUSP" 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*
Physical 1976 - 2024
*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 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-PISP_TUSP
MonitoringLocationName Tunnel Spring (Inside + Outside)
MonitoringLocationTypeName Spring
MonitoringLocationDescriptionText Tunnel Spring is a horizontal adit that was constructed into the hillside between 1902 and 1907 to capture diffuse spring flow. Records indicate that the Tunnel Spring adit extended more than 200 feet into the hillside when it was originally constructed in 1902-1907, and when it was inspected and repaired in 1933 and 1934. The thin rock and soil cover near the adit entrance collapsed over the years, so when the entrance was stabilized in 1987 only about 140 feet of the adit remained. Continued instability of the adit forced a major reconstruction of the outer part of the adit in 2000 and 2001. The first 94 feet of the adit was excavated and concrete walls and ceiling were poured. Caving and collapse of the tunnel prevented entry or stabilization in the remainder (56 feet) of the adit, where most of the water enters the tunnel. A steel culvert was driven through the rubble pile at the end of the stabilized section of the adit to provide a conduit for water to flow from the back end of the tunnel to the reconstructed part of the tunnel.
HUCEightDigitCode 15010003
LatitudeMeasure 36.8627700000
LongitudeMeasure -112.7401000000
SourceMapScaleNumeric 24000
HorizontalCollectionMethodName Interpolation-Digital Map Source
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 4931.1
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Unknown
VerticalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 04
CountyCode 015
ProviderName STORET