AS E 135 S 100 — NGS ME1673 — Chicago, US

USNGStrigunknown#215872
Latitude
41.980278°
Longitude
-87.890556°
Ortho h
198.16 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of reference points that form the foundation of the United States' horizontal control system. Located near Chicago, Illinois, at coordinates 41.98028°, -87.89056°, this trig point serves as a monument for establishing accurate horizontal positions in surveying and mapping operations. Trig stations like this one are typically monumented points occupying elevated or strategically visible locations, allowing surveyors to conduct theodolite observations and establish inter-visibility with other control points. The NGS network provides essential geodetic control for boundary surveys, engineering projects, and spatial data collection across the nation. Verification and proper documentation of such benchmarks remain important for maintaining the integrity of regional and national surveying frameworks, ensuring that contemporary and future surveys maintain consistency with established geodetic datums.

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AS E 135 S 100 — NGS ME1673 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #215872 on SurveyingPedia and sits at an approximate elevation of 198.2 metres. Its coordinates in WGS84 are 41.980278°, -87.890556°, corresponding to 41° 58′ 49.00″ N, 87° 53′ 26.00″ 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 AS E 135 S 100 — NGS ME1673 — 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)41.980278, -87.890556
WGS84 (DMS)41° 58′ 49.00″ N, 87° 53′ 26.00″ W
UTM zone (approx.)Zone 16N (approx.)
Elevation198.16 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 · monument
ORD CONTROL MON 115 — NGS DL6034 — Chicago, US
0.3 km away · US
US NGS · triangulation station
AIRPORT BM K 18 COC — NGS ME3180 — Chicago, US
0.9 km away · US
US NGS · triangulation station
O HARE CHICAGO INTL APT TANK — NGS ME3169
1.1 km away · US
US NGS · triangulation station
AS S 30 E 95 — NGS ME1676 — Chicago, US
1.2 km away · US
US NGS · triangulation station
5 C LEYDEN TWP — NGS ME1671 — Chicago, US
1.2 km away · US
US NGS · triangulation station
AS S 100 E 95 — NGS ME1672 — Chicago, US
1.3 km away · US

Frequently asked questions

What is AS E 135 S 100 — NGS ME1673 — Chicago, US?

AS E 135 S 100 — NGS ME1673 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #215872 and sits at an elevation of 198.2 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of AS E 135 S 100 — NGS ME1673 — Chicago, US?

The position of AS E 135 S 100 — NGS ME1673 — Chicago, US in WGS84 is 41.980278°, -87.890556° (decimal), or 41° 58′ 49.00″ N, 87° 53′ 26.00″ 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.