SL 111 — NGS AA8630 — Saint John, US

USNGStrigunknown#7386
Latitude
38.703353°
Longitude
-90.336400°
Ellipsoidal h
154.25 m
Ortho h
185.50 m
Verifications
0
Last checked
Never
This trigonometric station is part of the National Geodetic Survey's control network, which forms the foundation of horizontal and vertical reference systems across the United States. As a trig point, this benchmark serves as a precisely positioned reference for terrestrial surveys, mapping projects, and spatial data collection throughout its region. Located near Saint John, Missouri, at coordinates 38.70335° N, 90.33640° W, with an ellipsoidal elevation of 154.2 meters, this station provides surveyors and geospatial professionals with an established control point of documented accuracy. Such benchmarks enable consistency in surveying work, engineering projects, and geographic information systems across jurisdictional boundaries. Verification and proper documentation of geodetic control points remain essential for maintaining the integrity of the national spatial reference framework. Professional surveyors regularly utilize such stations to validate measurements and ensure accuracy in their work.

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SL 111 — NGS AA8630 — Saint John, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #7386 on SurveyingPedia and sits at an approximate elevation of 185.5 metres. Its coordinates in WGS84 are 38.703353°, -90.336400°, corresponding to 38° 42′ 12.07″ N, 90° 20′ 11.04″ 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 SL 111 — NGS AA8630 — Saint John, 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)38.703353, -90.336400
WGS84 (DMS)38° 42′ 12.07″ N, 90° 20′ 11.04″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation185.50 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
SL 16 — NGS AA8657 — Normandy, US
3.0 km away · US
US NGS · triangulation station
SL 107 — NGS AA8625 — Berkeley, US
3.1 km away · US
US NGS · triangulation station
SL 106 — NGS AA8624 — Overland, US
3.3 km away · US
US NGS · triangulation station
STL D — NGS AD9665 — Berkeley, US
3.7 km away · US
US NGS · triangulation station
SL 08 — NGS AA8615 — University City, US
3.9 km away · US
US NGS · triangulation station
SL 110 — NGS AA8629 — Woodson Terrace, US
4.1 km away · US

Frequently asked questions

What is SL 111 — NGS AA8630 — Saint John, US?

SL 111 — NGS AA8630 — Saint John, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7386 and sits at an elevation of 185.5 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of SL 111 — NGS AA8630 — Saint John, US?

The position of SL 111 — NGS AA8630 — Saint John, US in WGS84 is 38.703353°, -90.336400° (decimal), or 38° 42′ 12.07″ N, 90° 20′ 11.04″ 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.