GPS90 6F3 — NGS SY5783 — King County, US

USNGStrigunknown#213930
Latitude
47.660315°
Longitude
-122.078821°
Ellipsoidal h
-1.05 m
Ortho h
22.40 m
Verifications
0
Last checked
Never
This triangulation (trig) station is part of the National Geodetic Survey's network, which establishes the foundation for accurate positioning and mapping throughout the United States. Located in King County, Washington, at coordinates 47.66032° north latitude and 122.07882° west longitude, this reference point serves as a control station for geodetic surveys and related spatial measurements in the region. Trig stations like this provide monumented positions of known, highly accurate coordinates that surveyors, engineers, and cartographers reference when conducting local surveys and establishing project control networks. The ellipsoidal elevation recorded as -1.0 m reflects the point's vertical position relative to the reference ellipsoid model. Proper documentation and periodic verification of such benchmarks ensure the integrity of the geodetic network and support reliable surveying work across jurisdictions and time periods.

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GPS90 6F3 — NGS SY5783 — King County, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #213930 on SurveyingPedia and sits at an approximate elevation of 22.4 metres. Its coordinates in WGS84 are 47.660315°, -122.078821°, corresponding to 47° 39′ 37.14″ N, 122° 4′ 43.76″ 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 GPS90 6F3 — NGS SY5783 — King County, 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)47.660315, -122.078821
WGS84 (DMS)47° 39′ 37.14″ N, 122° 4′ 43.76″ W
UTM zone (approx.)Zone 10N (approx.)
Elevation22.40 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 · GNSS reference point
GPS90 6G4 — NGS SY5784 — King County, US
0.5 km away · US
US NGS · GNSS reference point
GPS90 5G1 — NGS SY5778 — Redmond, US
0.7 km away · US
US NGS · GNSS reference point
GPS90 5G4 — NGS SY5779 — Redmond, US
1.2 km away · US
US NGS · triangulation station
MERMAID — NGS SY3539 — Sammamish, US
1.3 km away · US
US NGS · triangulation station
ADELAIDE — NGS SY3528 — Sammamish, US
1.6 km away · US
US NGS · triangulation station
GPS90 6E3 — NGS SY5782 — King County, US
1.6 km away · US

Frequently asked questions

What is GPS90 6F3 — NGS SY5783 — King County, US?

GPS90 6F3 — NGS SY5783 — King County, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #213930 and sits at an elevation of 22.4 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of GPS90 6F3 — NGS SY5783 — King County, US?

The position of GPS90 6F3 — NGS SY5783 — King County, US in WGS84 is 47.660315°, -122.078821° (decimal), or 47° 39′ 37.14″ N, 122° 4′ 43.76″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 10N (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.