STL D — NGS AD9665 — Berkeley, US

USNGStrigunknown#7407
Latitude
38.736773°
Longitude
-90.341432°
Ellipsoidal h
154.37 m
Ortho h
185.73 m
Verifications
0
Last checked
Never
This triangulation station is part of the NGS network, which establishes and maintains the fundamental geodetic framework for the United States. Trig stations serve as control points for surveying, mapping, and engineering projects across the country. Located near Berkeley, Missouri, at coordinates 38.73677° N, 90.34143° W, this benchmark provides precise horizontal and vertical reference data for regional surveying work in the St. Louis metropolitan area. The ellipsoidal elevation of 154.4 meters contributes to the vertical datum used in Missouri. Documentation and verification of such control points remain essential for maintaining survey accuracy and consistency. Professional surveyors rely on these established benchmarks to ensure proper positioning of property boundaries, infrastructure projects, and geospatial datasets. Regular inspection and confirmation of benchmark stability helps preserve the integrity of the geodetic network for current and future surveying applications.

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STL D — NGS AD9665 — Berkeley, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #7407 on SurveyingPedia and sits at an approximate elevation of 185.7 metres. Its coordinates in WGS84 are 38.736773°, -90.341432°, corresponding to 38° 44′ 12.38″ N, 90° 20′ 29.15″ 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 STL D — NGS AD9665 — Berkeley, 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)38.736773, -90.341432
WGS84 (DMS)38° 44′ 12.38″ N, 90° 20′ 29.15″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation185.73 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
STL F — NGS DG6505 — Berkeley, US
1.1 km away · US
US NGS · triangulation station
SL 110 — NGS AA8629 — Woodson Terrace, US
1.4 km away · US
US NGS · triangulation station
SL 107 — NGS AA8625 — Berkeley, US
1.6 km away · US
US NGS · triangulation station
STL C — NGS AD9664 — Saint Louis County, US
2.8 km away · US
US NGS · triangulation station
SL 108 — NGS AA8626 — Hazelwood, US
3.4 km away · US
US NGS · triangulation station
SL 117 — NGS AA8636 — Ferguson, US
3.6 km away · US

Frequently asked questions

What is STL D — NGS AD9665 — Berkeley, US?

STL D — NGS AD9665 — Berkeley, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7407 and sits at an elevation of 185.7 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of STL D — NGS AD9665 — Berkeley, US?

The position of STL D — NGS AD9665 — Berkeley, US in WGS84 is 38.736773°, -90.341432° (decimal), or 38° 44′ 12.38″ N, 90° 20′ 29.15″ 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.