TIDAL — NGS SY5602 — Seattle, US

USNGStrigunknown#214351
Latitude
47.687411°
Longitude
-122.260717°
Ellipsoidal h
-17.23 m
Ortho h
6.52 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network that establishes the fundamental horizontal and vertical control framework for the United States. Located near Seattle, Washington at coordinates 47.68741° N, 122.26072° W, this trig point serves as a reference for surveying, mapping, and engineering projects throughout the region. The ellipsoidal elevation of -17.2 meters indicates a position below the reference ellipsoid, typical for areas in proximity to sea level. Triangulation stations like this provide monumented positions of known accuracy that surveyors and engineers use to verify local survey networks and maintain positional consistency across projects. Regular documentation and verification of such control points ensures the integrity of geodetic data supporting infrastructure development, land administration, and scientific research across the Pacific Northwest.

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TIDAL — NGS SY5602 — Seattle, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #214351 on SurveyingPedia and sits at an approximate elevation of 6.5 metres. Its coordinates in WGS84 are 47.687411°, -122.260717°, corresponding to 47° 41′ 14.68″ N, 122° 15′ 38.58″ 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 TIDAL — NGS SY5602 — Seattle, 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)47.687411, -122.260717
WGS84 (DMS)47° 41′ 14.68″ N, 122° 15′ 38.58″ W
UTM zone (approx.)Zone 10N (approx.)
Elevation6.52 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
DIVE — NGS AI3661 — Seattle, US
0.1 km away · US
US NGS · triangulation station
LAKE WASHINGTON NOAA PIER W LT — NGS SY5624 — Seattle, US
0.1 km away · US
US NGS · triangulation station
MONUMENT 13 — NGS SY3897 — Seattle, US
0.1 km away · US
US NGS · triangulation station
PIER — NGS AI3608 — Seattle, US
0.1 km away · US
US NGS · triangulation station
LAKE WASHINGTON NOAA PIER E LT — NGS SY5623 — Seattle, US
0.2 km away · US
US NGS · triangulation station
SAND POINT — NGS SY5596 — Seattle, US
0.2 km away · US

Frequently asked questions

What is TIDAL — NGS SY5602 — Seattle, US?

TIDAL — NGS SY5602 — Seattle, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #214351 and sits at an elevation of 6.5 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of TIDAL — NGS SY5602 — Seattle, US?

The position of TIDAL — NGS SY5602 — Seattle, US in WGS84 is 47.687411°, -122.260717° (decimal), or 47° 41′ 14.68″ N, 122° 15′ 38.58″ 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.