89 — NGS ME1805 — Chicago, US

USNGStrigunknown#215568
Latitude
41.822778°
Longitude
-87.686111°
Ortho h
180.43 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's horizontal control network, which establishes precise positional references across the United States. Located near Chicago, Illinois, at coordinates 41.82278° N, 87.68611° W, this trig point serves as a foundational survey marker for regional and local geodetic work. Triangulation stations of this type were established to create accurate geometric frameworks for mapping, engineering projects, and land surveys. The NGS network remains essential infrastructure for professional surveyors, engineers, and geographic information system applications throughout the country. Documentation and verification of such benchmarks are critical for maintaining the integrity of the national spatial reference system. This point's position contributes to the broader geodetic foundation supporting surveying practices and geographic accuracy in the Chicago metropolitan region and surrounding areas.

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89 — NGS ME1805 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #215568 on SurveyingPedia and sits at an approximate elevation of 180.4 metres. Its coordinates in WGS84 are 41.822778°, -87.686111°, corresponding to 41° 49′ 22.00″ N, 87° 41′ 10.00″ 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 89 — NGS ME1805 — Chicago, 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)41.822778, -87.686111
WGS84 (DMS)41° 49′ 22.00″ N, 87° 41′ 10.00″ W
UTM zone (approx.)Zone 16N (approx.)
Elevation180.43 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
R 135 — NGS ME1804 — Chicago, US
0.2 km away · US
US NGS · triangulation station
KELLY — NGS ME2746 — Chicago, US
0.7 km away · US
US NGS · triangulation station
CHICAGO POLICE RAD TWR — NGS ME2748
0.8 km away · US
US NGS · triangulation station
S 135 — NGS ME1803 — Chicago, US
0.8 km away · US
US NGS · triangulation station
047 COC — NGS ME2750 — Chicago, US
0.9 km away · US
US NGS · triangulation station
Q 135 — NGS ME1806 — Chicago, US
1.2 km away · US

Frequently asked questions

What is 89 — NGS ME1805 — Chicago, US?

89 — NGS ME1805 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #215568 and sits at an elevation of 180.4 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of 89 — NGS ME1805 — Chicago, US?

The position of 89 — NGS ME1805 — Chicago, US in WGS84 is 41.822778°, -87.686111° (decimal), or 41° 49′ 22.00″ N, 87° 41′ 10.00″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 16N (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.