C 15 — NGS TU0589 — Waipahu, US

USNGStrigunknown#439
Latitude
21.514417°
Longitude
-158.063944°
Ortho h
288.11 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of precisely positioned reference points that form the foundation of the United States' geodetic infrastructure. Located near Waipahu on the island of Oahu, Hawaii, at coordinates 21.51442° N, 158.06394° W, this trig point serves as a control station for surveys and mapping activities throughout the Hawaiian Islands region. Triangulation stations of this type were historically established to create accurate positional frameworks for large-scale surveying projects. The point's documented coordinates enable surveyors, engineers, and cartographers to conduct precise measurements and maintain spatial accuracy across multiple projects and decades. Verification and proper documentation of such reference points remain essential to geodetic practice, ensuring consistency in surveying work and supporting infrastructure development, land records management, and scientific research across Hawaii.

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C 15 — NGS TU0589 — Waipahu, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #439 on SurveyingPedia and sits at an approximate elevation of 288.1 metres. Its coordinates in WGS84 are 21.514417°, -158.063944°, corresponding to 21° 30′ 51.90″ N, 158° 3′ 50.20″ 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 C 15 — NGS TU0589 — Waipahu, 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)21.514417, -158.063944
WGS84 (DMS)21° 30′ 51.90″ N, 158° 3′ 50.20″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation288.11 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 95 — NGS DR2167 — Waipahu, US
0.7 km away · US
US NGS · triangulation station
6 8 — NGS TU0590 — Waipahu, US
0.7 km away · US
US NGS · triangulation station
SOH 78 — NGS DR2146 — Waipahu, US
0.8 km away · US
US NGS · triangulation station
SOH 96 — NGS DR2168 — Waipahu, US
1.1 km away · US
US NGS · triangulation station
SOH 94 — NGS DR2166 — Waipahu, US
1.2 km away · US
US NGS · triangulation station
B 15 — NGS TU0588 — Waipahu, US
1.6 km away · US

Frequently asked questions

What is C 15 — NGS TU0589 — Waipahu, US?

C 15 — NGS TU0589 — Waipahu, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #439 and sits at an elevation of 288.1 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of C 15 — NGS TU0589 — Waipahu, US?

The position of C 15 — NGS TU0589 — Waipahu, US in WGS84 is 21.514417°, -158.063944° (decimal), or 21° 30′ 51.90″ N, 158° 3′ 50.20″ 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.