PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US

USNGStrigunknown#4539
Latitude
18.321406°
Longitude
-64.922768°
Ellipsoidal h
-40.15 m
Verifications
0
Last checked
Never
This triangulation station is part of the NGS network, which establishes the fundamental geodetic framework for the United States and its territories. Located in the Saint Thomas-Saint John District of the US Virgin Islands, this trig point serves as a horizontal control reference for surveying and mapping activities throughout the region. Triangulation stations of this type historically provided precise positional data essential for large-scale surveys and the development of accurate cartography. The negative ellipsoidal elevation of -40.2 meters indicates a position below the reference ellipsoid, consistent with subsurface or marine-adjacent locations in this Caribbean context. Documentation and verification of such control points remain valuable for maintaining geodetic infrastructure integrity, supporting civil engineering projects, and ensuring consistency in modern positioning systems. Surveyors and mapping professionals rely on accurate records of established control points for quality assurance in their work.

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Imagery © Esri · Earthstar Geographics · USGS · NASA · All providers credited

PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #4539 on SurveyingPedia and sits at an approximate elevation of -40.2 metres. Its coordinates in WGS84 are 18.321406°, -64.922768°, corresponding to 18° 19′ 17.06″ N, 64° 55′ 21.96″ W in the traditional degrees-minutes-seconds format. This page is a self-updating reference — all data is aggregated from public open sources and cross-checked periodically against the originating agency.

Professional surveyors, engineers, and topographers use points like PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US to anchor total-station traverses, verify GNSS/RTK solutions, calibrate levelling instruments, and validate survey deliverables against known coordinates. The record on this page is refreshed daily via automated pipelines that monitor the public sources for any updates, corrections, or status changes.

Coordinate formats

WGS84 (decimal)18.321406, -64.922768
WGS84 (DMS)18° 19′ 17.06″ N, 64° 55′ 21.96″ W
UTM zone (approx.)Zone 20N (approx.)
Elevation-40.15 m
Precise conversionOpen in coordinate converter →

Geodetic context in United States

The national geodetic reference in United States is maintained by National Geodetic Survey (NGS). The active datum is NAD83(2011) / NATRF2022 (active). Coordinates shown on this page are expressed in WGS84 (ETRF/ITRF-compatible) which is directly usable in most modern GNSS receivers. For cadastral work in United States you may need to convert to the local datum using the Coordinate Hub.

Browse the full list of indexed control points in United States from the country page.

Nearby benchmarks

The closest 6 indexed control points within roughly 50 km of this location:

US NGS · triangulation station
EAST POINT LIGHTHOUSE — NGS TV0502 — Saint Thomas - Saint John District, US
0.1 km away · US
US NGS · triangulation station
RUPERT ROCK HAZARD MARKER — NGS TZ5041 — Saint Thomas - Saint John District, US
0.9 km away · US
US NGS · triangulation station
ST THOMAS S BASE — NGS TV0514 — Saint Thomas - Saint John District, US
1.0 km away · US
US NGS · triangulation station
WEST INDIAN COMPANY PIER LIGHT — NGS TZ5052 — Saint Thomas - Saint John District, US
1.1 km away · US
US NGS · triangulation station
ROCK 1918 — NGS TV0521 — Saint Thomas - Saint John District, US
1.1 km away · US
US NGS · triangulation station
COWELL BATTERY SIGNAL MAST — NGS TZ5031 — Saint Thomas - Saint John District, US
1.1 km away · US

Frequently asked questions

What is PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US?

PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #4539 and sits at an elevation of -40.2 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US?

The position of PHOTO POINT 3A — NGS TV1542 — Saint Thomas - Saint John District, US in WGS84 is 18.321406°, -64.922768° (decimal), or 18° 19′ 17.06″ N, 64° 55′ 21.96″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 20N (approx.).

How can I reach and visit this triangulation station?

Use the satellite imagery above to see the surrounding area. You can open this location directly in Google Maps, Google Earth, Bing Maps, or OpenStreetMap using the buttons provided. Many geodetic points are accessible to the public; some are on protected or private land — check local regulations before any field visit. Always bring documentation or your credentials if you plan to use the marker for professional measurement.

Is this point verified and usable for professional surveying?

This record has been community-verified 0 times. Data quality depends on the source: NGS and official national agency points are typically centimetre-accurate, OpenStreetMap survey points are metre-accurate, and GeoNames topographic landmarks (peaks, hills) are reference-grade only. Always cross-reference with the original agency datasheet before using this point for cadastral, legal, or safety-critical work.

Original source: this record was imported from ngs_public. Always refer to the original datasheet for the most up-to-date and authoritative data.