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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-PORE_UP_19

TOMALES BAY - SAND POINT CHANNEL (11NPSWRD_WQX-PORE_UP_19) site data in the Water Quality Portal

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

This estuary site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "TOMALES BAY - SAND POINT CHANNEL" and has the identifier 11NPSWRD_WQX-PORE_UP_19. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18050005.

This site is located in Marin County County, California at 38.2304722000 degrees latitude and -122.9688889000 degrees longitude using the datum NAD27. No horizontal 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-PORE_UP_19" 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 1960 - 1960
Physical 1960 - 1960
*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-PORE_UP_19
MonitoringLocationName TOMALES BAY - SAND POINT CHANNEL
MonitoringLocationTypeName Estuary
MonitoringLocationDescriptionText THE STATION IS LOCATED ON THE TOMALES CA 7.5 MINUTE SERIES (TOPO.) QUADRANGLE. THE STATION IS LOCATED AT TOMALES BAY NEAR SAND POINT CHANNEL AND IS LOCATED OUTSIDE THE BOUNDARIES OF POINT REYES NATIONAL SEASHORE. DATA ARE FROM "ECOLOGICAL SURVEY OF TOMALES BAY" (MARCH 1961) BY R.G. JOHNSON; W.R. BRYANT; AND J.W. HEDGPETH FROM THE UNIVERSITY OF THE PACIFIC; PACIFIC MARINE STATION. THE STUDY WAS SUPPORTED BY A NATIONAL SCIENCE FOUNDATION GRANT AND WAS CONDUCTED TO "INVESTIGATE BASIC PROBLEMS IN MARINE ECOLOGY AND GEOLOGY" AND TO DEVELOP A LONGTERM MONITORING PROGRAM FOR THE AREA. FOR MORE INFORMATION ON POINT REYES NATIONAL SEASHORE CONTACT THE CHIEF OF RESOURCES AT POINT REYES CA 949569799 (TEL. 4156631092). DATA WERE PROCESSED AND UPLOADED TO STORET BY ADRIANE PETERSEN; NATIONAL PARK SERVICE WATER RESOURCES DIVISION; 1201 OAK RIDGE DR. SUITE 250; FORT COLLINS CO 80525 (TEL. 9702253516).*** Legacy STORET Station Type: /TYPA/AMBNT/ESTURY
HUCEightDigitCode 18050005
LatitudeMeasure 38.2304722000
LongitudeMeasure -122.9688889000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD27
CountryCode US
StateCode 06
CountyCode 041
ProviderName STORET