A 209 — NGS JU0715 — Philadelphia, US

USNGStrigunknown#218787
Latitude
39.993056°
Longitude
-75.081389°
Ortho h
7.05 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of control points that establish the foundational reference framework for mapping and surveying across the United States. Located near Philadelphia, Pennsylvania, at coordinates 39.99306°N, 75.08139°W, this trig point serves as a fixed spatial reference for precise positioning work in the region. Triangulation stations of this type were historically established to create a network of accurately positioned points visible from one another, enabling surveyors to extend precise control across areas of interest. Such monuments remain valuable for verifying and maintaining the integrity of modern surveying networks, including GPS and terrestrial measurements. Documentation and recovery of these benchmarks ensure continuity in geodetic control and support critical applications in surveying, mapping, and infrastructure development. Verification of existing control points contributes to the ongoing quality and reliability of the Nation's spatial reference system.

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A 209 — NGS JU0715 — Philadelphia, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #218787 on SurveyingPedia and sits at an approximate elevation of 7.0 metres. Its coordinates in WGS84 are 39.993056°, -75.081389°, corresponding to 39° 59′ 35.00″ N, 75° 4′ 53.00″ 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 A 209 — NGS JU0715 — Philadelphia, 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)39.993056, -75.081389
WGS84 (DMS)39° 59′ 35.00″ N, 75° 4′ 53.00″ W
UTM zone (approx.)Zone 18N (approx.)
Elevation7.05 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
3 PRR — NGS JU0714 — Philadelphia, US
0.0 km away · US
US NGS · triangulation station
X 208 X — NGS JU0933 — Philadelphia, US
0.4 km away · US
US NGS · triangulation station
Z 208 — NGS JU0920 — Philadelphia, US
0.7 km away · US
US NGS · triangulation station
4 PRR — NGS JU0925 — Philadelphia, US
0.7 km away · US
US NGS · triangulation station
PHILADELPHIA UNITED GAS TANK — NGS JU3022
1.0 km away · US
US NGS · triangulation station
W 208 X — NGS JU0932 — Philadelphia, US
1.0 km away · US

Frequently asked questions

What is A 209 — NGS JU0715 — Philadelphia, US?

A 209 — NGS JU0715 — Philadelphia, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #218787 and sits at an elevation of 7.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of A 209 — NGS JU0715 — Philadelphia, US?

The position of A 209 — NGS JU0715 — Philadelphia, US in WGS84 is 39.993056°, -75.081389° (decimal), or 39° 59′ 35.00″ N, 75° 4′ 53.00″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 18N (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.