HO 4 — NGS TU0666 — Kapolei, US

USNGStrigunknown#678
Latitude
21.320556°
Longitude
-158.015278°
Ortho h
5.25 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of control points establishing the horizontal geodetic framework across the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.32056°N, 158.01528°W, this trig point serves as a reference for surveying, mapping, and spatial data collection activities throughout the Hawaiian Islands region. Triangulation stations of this type were historically observed and monumented to provide accurate horizontal positioning for topographic mapping and engineering projects. As part of the NGS network, this point contributes to the national geodetic infrastructure and remains valuable for verification of survey work, boundary determination, and geographic information system applications. Surveyors and geospatial professionals rely on documented benchmark positions to ensure consistency and accuracy in local and regional surveys. Proper documentation and periodic validation of such control points supports the integrity of Hawaii's spatial data infrastructure.

Verify this point

Sign in to submit a verification from the field.

Verification history (0)

No verifications yet. Be the first to check this point!
🛰️ Satellite view
ESRI World Imagery · zoom 16 (~1 m/px)
Open in Google Earth →
Satellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, USSatellite imagery of HO 4 — NGS TU0666 — Kapolei, US, US
🗺️ Google Maps🚗 Street View🅱️ Bing Maps🌐 OpenStreetMap
Imagery © Esri · Earthstar Geographics · USGS · NASA · All providers credited

HO 4 — NGS TU0666 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #678 on SurveyingPedia and sits at an approximate elevation of 5.3 metres. Its coordinates in WGS84 are 21.320556°, -158.015278°, corresponding to 21° 19′ 14.00″ N, 158° 0′ 55.00″ 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 HO 4 — NGS TU0666 — 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)21.320556, -158.015278
WGS84 (DMS)21° 19′ 14.00″ N, 158° 0′ 55.00″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation5.25 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
SOH 29 — NGS DR2092 — Kapolei, US
0.1 km away · US
US NGS · triangulation station
SOH 29A — NGS DR2086 — Kapolei, US
0.1 km away · US
US NGS · triangulation station
STATE SURVEY 9 7 1969 — NGS TU1651 — Kapolei, US
0.3 km away · US
US NGS · triangulation station
NEW EWA PARK — NGS DR2318 — Kapolei, US
0.3 km away · US
US NGS · triangulation station
PAPIPI 1 — NGS DR2315 — Kapolei, US
0.5 km away · US
US NGS · triangulation station
SOH 28 — NGS DR2091 — Kapolei, US
0.8 km away · US

Frequently asked questions

What is HO 4 — NGS TU0666 — Kapolei, US?

HO 4 — NGS TU0666 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #678 and sits at an elevation of 5.3 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of HO 4 — NGS TU0666 — Kapolei, US?

The position of HO 4 — NGS TU0666 — Kapolei, US in WGS84 is 21.320556°, -158.015278° (decimal), or 21° 19′ 14.00″ N, 158° 0′ 55.00″ 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.