X 201 — NGS JC0190 — St. Louis, US

USNGStrigunknown#7124
Latitude
38.642500°
Longitude
-90.181667°
Ortho h
128.03 m
Verifications
0
Last checked
Never
This triangulation station is part of the NGS network, which serves as the foundational geodetic control for surveying and mapping activities throughout the United States. Located near St. Louis, Missouri, at coordinates 38.64250° N, 90.18167° W, this trig point functions as a horizontal control monument for establishing accurate positions of subsequent surveys and geographic features. Triangulation stations of this type historically provided primary control for large-scale surveying projects and continue to serve as reference points for modern positioning work. The point's location in the St. Louis vicinity positions it within regionally significant surveying infrastructure. Verification and documentation of such control points remain important for maintaining geodetic network integrity, supporting land surveys, engineering projects, and geographic information systems. Professional surveyors and geodesists rely on accurate recovery and validation of established monuments to ensure consistency across multiple surveys and jurisdictions.

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X 201 — NGS JC0190 — St. Louis, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #7124 on SurveyingPedia and sits at an approximate elevation of 128.0 metres. Its coordinates in WGS84 are 38.642500°, -90.181667°, corresponding to 38° 38′ 33.00″ N, 90° 10′ 54.00″ 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 X 201 — NGS JC0190 — St. Louis, 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)38.642500, -90.181667
WGS84 (DMS)38° 38′ 33.00″ N, 90° 10′ 54.00″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation128.03 m
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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
N 323 — NGS JC1172 — St. Louis, US
0.1 km away · US
US NGS · triangulation station
U 283 — NGS JC1153 — East St. Louis, US
0.8 km away · US
US NGS · triangulation station
P 323 — NGS JC1171 — St. Louis, US
1.0 km away · US
US NGS · triangulation station
M 323 — NGS JC1173 — St. Louis, US
1.2 km away · US
US NGS · triangulation station
A 226 — NGS JC0044 — St. Louis, US
1.5 km away · US
US NGS · triangulation station
15 — NGS JC0048 — St. Louis, US
1.5 km away · US

Frequently asked questions

What is X 201 — NGS JC0190 — St. Louis, US?

X 201 — NGS JC0190 — St. Louis, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7124 and sits at an elevation of 128.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of X 201 — NGS JC0190 — St. Louis, US?

The position of X 201 — NGS JC0190 — St. Louis, US in WGS84 is 38.642500°, -90.181667° (decimal), or 38° 38′ 33.00″ N, 90° 10′ 54.00″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 15N (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.