NANAKULI — NGS TU1690 — Kapolei, US

USNGStrigunknown#505
Latitude
21.388904°
Longitude
-158.142413°
Ortho h
111.60 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental horizontal and vertical control framework for the United States. Located near Kapolei on the island of Oahu, Hawaii, at coordinates 21.38890°N, 158.14241°W, this trig point serves as a reference station for surveying and mapping activities throughout the region. Triangulation stations of this type historically provided precise positioning data essential for large-scale surveys, property demarcation, and infrastructure development. Modern surveyors and GIS professionals rely on documented benchmark locations to validate contemporary positioning systems and maintain spatial data accuracy. The documented existence and recovery of such control points remain valuable for quality assurance in surveying work and for understanding the historical development of Hawaii's geodetic infrastructure. Verification and maintenance of these reference monuments support continued surveying precision across the islands.

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NANAKULI — NGS TU1690 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #505 on SurveyingPedia and sits at an approximate elevation of 111.6 metres. Its coordinates in WGS84 are 21.388904°, -158.142413°, corresponding to 21° 23′ 20.06″ N, 158° 8′ 32.69″ 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 NANAKULI — NGS TU1690 — 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)21.388904, -158.142413
WGS84 (DMS)21° 23′ 20.06″ N, 158° 8′ 32.69″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation111.60 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
PI MON 1 A — NGS TU1721 — Kapolei, US
0.8 km away · US
GeoNames topographic database · mine_entrance
Waianea Quarry
0.8 km away · US
US NGS · triangulation station
SOH 11 — NGS DR2074 — Kapolei, US
0.8 km away · US
US NGS · triangulation station
A 14 — NGS TU0615 — Kapolei, US
0.8 km away · US
US NGS · triangulation station
POT 124+29.46 LUALUALEI — NGS TU1722 — Kapolei, US
1.0 km away · US
US NGS · triangulation station
SOH 12 — NGS DR2075 — Kapolei, US
1.1 km away · US

Frequently asked questions

What is NANAKULI — NGS TU1690 — Kapolei, US?

NANAKULI — NGS TU1690 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #505 and sits at an elevation of 111.6 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of NANAKULI — NGS TU1690 — Kapolei, US?

The position of NANAKULI — NGS TU1690 — Kapolei, US in WGS84 is 21.388904°, -158.142413° (decimal), or 21° 23′ 20.06″ N, 158° 8′ 32.69″ 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.