CLARKS MOUND — NGS JC1580 — Saint Clair County, US

USNGStrigunknown#7032
Latitude
38.579394°
Longitude
-90.070292°
Ortho h
206.50 m
Verifications
0
Last checked
Never
This geodetic reference point is a triangulation (trig) station within the National Geodetic Survey network, which establishes the fundamental geometric framework for mapping and surveying across the United States. Located in Saint Clair County, Illinois, at coordinates 38.57939° N, 90.07029° W, this station serves as a control point for horizontal positioning in regional and local surveys. Trig stations like this were historically established as vertices in networks of measured triangles, providing accurate reference positions for subsequent survey work. The point's documented geographic location makes it valuable for verifying survey accuracy, establishing control for engineering projects, and maintaining the coherence of the national spatial reference system. Contemporary surveyors and geodesists utilize such benchmarks to validate modern positioning technology and ensure consistency across survey networks. Verification and proper documentation of these reference points remain essential for supporting infrastructure development, property surveys, and scientific applications requiring precise horizontal control.

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CLARKS MOUND — NGS JC1580 — 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 #7032 on SurveyingPedia and sits at an approximate elevation of 206.5 metres. Its coordinates in WGS84 are 38.579394°, -90.070292°, corresponding to 38° 34′ 45.82″ N, 90° 4′ 13.05″ 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 CLARKS MOUND — NGS JC1580 — 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)38.579394, -90.070292
WGS84 (DMS)38° 34′ 45.82″ N, 90° 4′ 13.05″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation206.50 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
UM 116 — NGS DP3020 — Fairview Heights, US
2.6 km away · US
US NGS · triangulation station
FRENCH VILLAGE ST POL RAD MAST — NGS JC1581 — Fairview Heights, US
2.7 km away · US
US NGS · triangulation station
UM 115 — NGS DP3019 — Belleville, US
2.8 km away · US
US NGS · triangulation station
D 249 — NGS JC0173 — Fairview Heights, US
3.0 km away · US
US NGS · triangulation station
UM 117 — NGS DP3021 — Caseyville, US
3.0 km away · US
US NGS · triangulation station
AMERICAN BOTTOM LOWER BASE 2 — NGS JC1256 — Caseyville, US
3.2 km away · US

Frequently asked questions

What is CLARKS MOUND — NGS JC1580 — Saint Clair County, US?

CLARKS MOUND — NGS JC1580 — Saint Clair County, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7032 and sits at an elevation of 206.5 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of CLARKS MOUND — NGS JC1580 — Saint Clair County, US?

The position of CLARKS MOUND — NGS JC1580 — Saint Clair County, US in WGS84 is 38.579394°, -90.070292° (decimal), or 38° 34′ 45.82″ N, 90° 4′ 13.05″ 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.