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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-SFAN_I&M_CHA2

Chalone Creek at Road Bridge (11NPSWRD_WQX-SFAN_I&M_CHA2) 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 National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Chalone Creek at Road Bridge" and has the identifier 11NPSWRD_WQX-SFAN_I&M_CHA2. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18060005.

This site is located in San Benito County County, California at 36.4853472200 degrees latitude and -121.1674583330 degrees longitude using the datum NAD83. No horizontal location accuracy metadata is available. This site is at an elevation of 1000 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-SFAN_I&M_CHA2" 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*
Microbiological 2004 - 2024
Nutrient 2004 - 2024
Physical 2004 - 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-SFAN_I&M_CHA2
MonitoringLocationName Chalone Creek at Road Bridge
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Hwy. 146 Road Bridge to visitor's center; site is downstream of bridge across from fire wayside exhibit and portable toilet.
HUCEightDigitCode 18060005
LatitudeMeasure 36.4853472200
LongitudeMeasure -121.1674583330
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 1000
VerticalMeasure/MeasureUnitCode ft
VerticalCollectionMethodName Topographic Map Interpolation
VerticalCoordinateReferenceSystemDatumName SEALV
CountryCode US
StateCode 06
CountyCode 069
ProviderName STORET