SOH ST MON 2 — NGS DR2165 — Waipahu, US

USNGStrigunknown#551
Latitude
21.502722°
Longitude
-158.052111°
Ortho h
254.24 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network, which establishes and maintains the foundational control points for surveying and mapping across the United States. Located near Waipahu on the island of Oahu, Hawaii, at coordinates 21.50272°N, 158.05211°W, this trig point serves as a reference station for horizontal positioning. Triangulation stations of this type have historically provided precise horizontal control for cadastral surveys, engineering projects, and map compilation throughout Hawaii's surveying infrastructure. The documented coordinates allow surveyors and engineers to reference their local measurements to the national geodetic framework. Verification and proper documentation of such control points remain important for maintaining survey accuracy and consistency across multiple projects and jurisdictions. Professional surveyors rely on these established reference stations when conducting boundary surveys, construction layout, and spatial data collection in Hawaii.

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SOH ST MON 2 — NGS DR2165 — Waipahu, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #551 on SurveyingPedia and sits at an approximate elevation of 254.2 metres. Its coordinates in WGS84 are 21.502722°, -158.052111°, corresponding to 21° 30′ 9.80″ N, 158° 3′ 7.60″ 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 SOH ST MON 2 — NGS DR2165 — 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)21.502722, -158.052111
WGS84 (DMS)21° 30′ 9.80″ N, 158° 3′ 7.60″ W
UTM zone (approx.)Zone 4N (approx.)
Elevation254.24 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 15 — NGS TU0588 — Waipahu, US
0.2 km away · US
US NGS · triangulation station
G 245 — NGS TU0662 — Waipahu, US
0.9 km away · US
US NGS · triangulation station
SOH 78 — NGS DR2146 — Waipahu, US
1.0 km away · US
US NGS · triangulation station
H 245 — NGS TU0580 — Waipahu, US
1.5 km away · US
US NGS · triangulation station
SOH 94 — NGS DR2166 — Waipahu, US
1.5 km away · US
GeoNames topographic database · historic_site
Kukaniloko Birthstones State Monument
1.7 km away · US

Frequently asked questions

What is SOH ST MON 2 — NGS DR2165 — Waipahu, US?

SOH ST MON 2 — NGS DR2165 — Waipahu, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #551 and sits at an elevation of 254.2 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of SOH ST MON 2 — NGS DR2165 — Waipahu, US?

The position of SOH ST MON 2 — NGS DR2165 — Waipahu, US in WGS84 is 21.502722°, -158.052111° (decimal), or 21° 30′ 9.80″ N, 158° 3′ 7.60″ 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.