STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US

USNGStrigunknown#492
Latitude
21.369726°
Longitude
-158.135882°
Ortho h
8.00 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of control points that establish the horizontal geodetic framework for the United States. Positioned near Kapolei on the island of Oahu, Hawaii, this trig point serves as a reference for mapping, surveying, and engineering projects throughout the Hawaiian Islands region. Trigonometric stations of this classification provide precise positional data for cadastral surveys, infrastructure development, and scientific applications. The coordinates 21.36973°N, 158.13588°W define its location within the broader National Spatial Reference System. Documentation and verification of such benchmarks remain essential for maintaining the integrity of surveying networks, ensuring consistency across multiple projects, and supporting land records management. Regular confirmation of these control points' accessibility and condition is valuable for the surveying profession and government agencies relying on accurate positional references.

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STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #492 on SurveyingPedia and sits at an approximate elevation of 8.0 metres. Its coordinates in WGS84 are 21.369726°, -158.135882°, corresponding to 21° 22′ 11.01″ N, 158° 8′ 9.18″ 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 STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, 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)21.369726, -158.135882
WGS84 (DMS)21° 22′ 11.01″ N, 158° 8′ 9.18″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation8.00 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
B 14 — NGS TU0616 — Kapolei, US
0.1 km away · US
US NGS · triangulation station
8 9 — NGS TU0617 — Kapolei, US
0.2 km away · US
US NGS · triangulation station
STATE SURVEY 8 9B HILL REF 2 — NGS TU1682 — Kapolei, US
0.3 km away · US
US NGS · triangulation station
PT MON 188+95.88 — NGS TU1719 — Kapolei, US
0.6 km away · US
US NGS · triangulation station
NANAKULI USN LAB 111 S STA — NGS TU1689 — Kapolei, US
0.7 km away · US
US NGS · triangulation station
9 1 — NGS TU0618 — Kapolei, US
1.1 km away · US

Frequently asked questions

What is STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US?

STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #492 and sits at an elevation of 8.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US?

The position of STATE SURVEY 8 9A HARRIET — NGS TU1683 — Kapolei, US in WGS84 is 21.369726°, -158.135882° (decimal), or 21° 22′ 11.01″ N, 158° 8′ 9.18″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 4N (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.