Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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-AMME_WERI_0804

Tanapag Lagoon Site No. 4, at Seaplane Ramps (11NPSWRD_WQX-AMME_WERI_0804) site data in the Water Quality Portal

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

This ocean site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Tanapag Lagoon Site No. 4, at Seaplane Ramps" and has the identifier 11NPSWRD_WQX-AMME_WERI_0804.

This site is located in Saipan Municipality County, Northern Mariana Islands at 15.2308745700 degrees latitude and 145.7396219400 degrees longitude using the datum WGS84. 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-AMME_WERI_0804" 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, Minor, Metals 2003 - 2003
Inorganics, Minor, Non-metals 2003 - 2003
Not Assigned 2003 - 2003
Physical 2003 - 2003
*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-AMME_WERI_0804
MonitoringLocationName Tanapag Lagoon Site No. 4, at Seaplane Ramps
MonitoringLocationTypeName Ocean
MonitoringLocationDescriptionText This station is at Tanapag Lagoon Site No. 4, at Seaplane Ramps. The twin ramp facility was built to accommodate seaplane transportation at the end of WWII, and currently the western ramp serves as a jetty for tour boat operators while the eastern ramp is used primarily for dry dock boat maintenance. Site 4 was centrally located on the inner side of the eastern ramp.
LatitudeMeasure 15.2308745700
LongitudeMeasure 145.7396219400
HorizontalCollectionMethodName Interpolation-Digital Map Source
HorizontalCoordinateReferenceSystemDatumName WGS84
CountryCode US
StateCode 69
CountyCode 110
ProviderName STORET