C 285 — NGS JC1133 — Saint Clair County, US

USNGStrigunknown#7168
Latitude
38.548333°
Longitude
-90.228333°
Ortho h
130.47 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of control points that form the foundation of North America's surveying and mapping infrastructure. Located in Saint Clair County, Illinois, at coordinates 38.54833° N, 90.22833° W, this trig point serves as a precisely established reference for horizontal control in the region. Triangulation stations such as this were historically occupied during theodolite surveys to create networks of known positions across the country. These points enable surveyors, engineers, and cartographers to reference their work to a common datum and ensure consistency across projects. The NGS maintains records of such benchmarks to preserve their institutional knowledge and facilitate their continued use. Verification and documentation of existing control points remain valuable for local surveying work, construction projects, and updating geographic databases. Access to accurate historical control data supports professional surveying practices and infrastructure development throughout the region.

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C 285 — NGS JC1133 — Saint Clair County, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #7168 on SurveyingPedia and sits at an approximate elevation of 130.5 metres. Its coordinates in WGS84 are 38.548333°, -90.228333°, corresponding to 38° 32′ 54.00″ N, 90° 13′ 42.00″ 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 C 285 — NGS JC1133 — Saint Clair County, 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)38.548333, -90.228333
WGS84 (DMS)38° 32′ 54.00″ N, 90° 13′ 42.00″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation130.47 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
B 285 — NGS JC1134 — Saint Clair County, US
1.5 km away · US
US NGS · triangulation station
D 285 — NGS JC1132 — East Carondelet, US
1.6 km away · US
US NGS · triangulation station
CSL 05 — NGS AA8565 — St. Louis, US
1.8 km away · US
US NGS · triangulation station
A 285 — NGS JC1135 — Cahokia, US
2.0 km away · US
US NGS · triangulation station
R 284 — NGS JC1145 — Cahokia, US
2.4 km away · US
US NGS · triangulation station
RV 10 — NGS JC0095 — Dupo, US
2.6 km away · US

Frequently asked questions

What is C 285 — NGS JC1133 — Saint Clair County, US?

C 285 — NGS JC1133 — Saint Clair County, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7168 and sits at an elevation of 130.5 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of C 285 — NGS JC1133 — Saint Clair County, US?

The position of C 285 — NGS JC1133 — Saint Clair County, US in WGS84 is 38.548333°, -90.228333° (decimal), or 38° 32′ 54.00″ N, 90° 13′ 42.00″ 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.