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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 legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  21HI >  21HI-001141

HILO BAY (OFF SHORE) (21HI-001141) site data in the Water Quality Portal

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

This ocean site, maintained by the Hawaii Department of Health Clean Water Branch (identifier 21HI), has the name "HILO BAY (OFF SHORE)" and has the identifier 21HI-001141.

This site is located in Hawaii County County, Hawaii at 19.7452778000 degrees latitude and -155.0813889000 degrees longitude using the datum UNKWN. 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 "21HI-001141" 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*
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1982 - 1997
Information 1979 - 1990
Inorganics, Major, Non-metals 1990 - 1994
Microbiological 1979 - 2002
Not Assigned 1979 - 1997
Nutrient 1979 - 1997
Organics, Other 1980 - 1994
Physical 1979 - 2002
*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 21HI
OrganizationFormalName Hawaii Department of Health Clean Water Branch
MonitoringLocationIdentifier 21HI-001141
MonitoringLocationName HILO BAY (OFF SHORE)
MonitoringLocationTypeName Ocean
MonitoringLocationDescriptionText MIGRATED FROM LEGACY STORET AGENCY CODE (21HI ) ON 07-DEC-99 MAJOR BASIN NAME: HAWAII BASIN CODE: 170100 MINOR BASIN NAME: HAWAII
LatitudeMeasure 19.7452778000
LongitudeMeasure -155.0813889000
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 15
CountyCode 001
ProviderName STORET