TT STA 38 F — NGS JC0091 — Cahokia, US

USNGStrigunknown#7239
Latitude
38.570444°
Longitude
-90.187611°
Ortho h
125.02 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental control framework for surveying and mapping throughout the United States. Trigonometric stations of this type serve as fixed reference points for horizontal positioning and are typically established at elevated locations to maximize intervisibility with other control points. Located near Cahokia, Illinois, this benchmark occupies a strategic position within the NGS control network serving the Mississippi River valley region. The coordinates define its precise horizontal location within the North American datum. Triangulation stations remain valuable for verifying modern survey work, evaluating positional accuracy of local surveys, and maintaining the geometric integrity of the national geodetic infrastructure. Professional surveyors rely on such documented control points to ensure consistency and reliability in construction, boundary determination, and large-scale mapping projects.

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TT STA 38 F — NGS JC0091 — Cahokia, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #7239 on SurveyingPedia and sits at an approximate elevation of 125.0 metres. Its coordinates in WGS84 are 38.570444°, -90.187611°, corresponding to 38° 34′ 13.60″ N, 90° 11′ 15.40″ 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 TT STA 38 F — NGS JC0091 — Cahokia, 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)38.570444, -90.187611
WGS84 (DMS)38° 34′ 13.60″ N, 90° 11′ 15.40″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation125.02 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
K 146 — NGS JC0089 — Cahokia, US
0.3 km away · US
US NGS · triangulation station
L 146 — NGS JC0090 — Cahokia, US
0.4 km away · US
US NGS · triangulation station
RV 6 — NGS JC0088 — Cahokia, US
1.0 km away · US
US NGS · triangulation station
RV 5 — NGS JC0087 — Cahokia, US
1.1 km away · US
US NGS · triangulation station
P 284 — NGS JC1147 — Cahokia, US
1.3 km away · US
US NGS · triangulation station
M 146 — NGS JC0085 — Cahokia, US
1.3 km away · US

Frequently asked questions

What is TT STA 38 F — NGS JC0091 — Cahokia, US?

TT STA 38 F — NGS JC0091 — Cahokia, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #7239 and sits at an elevation of 125.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of TT STA 38 F — NGS JC0091 — Cahokia, US?

The position of TT STA 38 F — NGS JC0091 — Cahokia, US in WGS84 is 38.570444°, -90.187611° (decimal), or 38° 34′ 13.60″ N, 90° 11′ 15.40″ 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.