STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US

USNGStrigunknown#519
Latitude
21.401920°
Longitude
-158.176731°
Ortho h
3.00 m
Verifications
0
Last checked
Never
This triangulation station is part of the NGS network, the United States' primary system for geodetic control and horizontal positioning. Located near Kapolei on the island of Oahu, Hawaii, this trig point serves as a reference monument for surveying and mapping activities across the region. Triangulation stations of this classification historically provided essential framework for establishing accurate ground coordinates before the advent of satellite-based positioning. The point's documented location at 21.40192°N, 158.17673°W contributes to the broader geodetic datum maintained by the National Geodetic Survey. Verification and documentation of such reference points remain valuable for surveying professionals conducting boundary surveys, engineering projects, and cartographic work. Maintaining records of established benchmarks supports continuity in spatial data accuracy and enables researchers to assess crustal deformation in tectonically active regions such as Hawaii.

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STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #519 on SurveyingPedia and sits at an approximate elevation of 3.0 metres. Its coordinates in WGS84 are 21.401920°, -158.176731°, corresponding to 21° 24′ 6.91″ N, 158° 10′ 36.23″ 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 7C — NGS TU1730 — 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)21.401920, -158.176731
WGS84 (DMS)21° 24′ 6.91″ N, 158° 10′ 36.23″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation3.00 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:

GeoNames topographic database · cape
Mā‘ili Point
0.0 km away · US
US NGS · triangulation station
Y 13 — NGS TU0612 — Kapolei, US
0.1 km away · US
US NGS · triangulation station
STATE SURVEY 8 7D — NGS TU1729 — Kapolei, US
0.2 km away · US
US NGS · triangulation station
STATE SURVEY 8 7E SLIM REF 19 — NGS TU1728 — Kapolei, US
0.7 km away · US
US NGS · triangulation station
STATE SURVEY 8 7B — NGS TU1732
0.7 km away · US
US NGS · triangulation station
BOUNDARY MARKER 4 — NGS TU1710 — Kapolei, US
0.7 km away · US

Frequently asked questions

What is STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US?

STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #519 and sits at an elevation of 3.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US?

The position of STATE SURVEY 8 7C — NGS TU1730 — Kapolei, US in WGS84 is 21.401920°, -158.176731° (decimal), or 21° 24′ 6.91″ N, 158° 10′ 36.23″ 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.