SOUTH SANITARY — NGS ME1801 — Chicago, US

USNGStrigunknown#215582
Latitude
41.831944°
Longitude
-87.701389°
Ortho h
183.63 m
Verifications
0
Last checked
Never
This trigonometric station is part of the National Geodetic Survey's network, which establishes the foundational control points for surveying and mapping throughout the United States. Located near Chicago, Illinois, at coordinates 41.83194°N, 87.70139°W, this trig point serves as a reference station for horizontal positioning in its region. Trigonometric stations of this type were historically used to establish accurate horizontal control networks through triangulation methods. Such points remain valuable reference markers for professional surveyors, engineers, and cartographers conducting local and regional surveys. The verification and documentation of these benchmarks ensures the integrity of geodetic records and supports precise spatial measurements across both public and private surveying projects. Proper maintenance of this network contributes to accurate mapping infrastructure and land boundary determinations throughout the country.

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SOUTH SANITARY — NGS ME1801 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #215582 on SurveyingPedia and sits at an approximate elevation of 183.6 metres. Its coordinates in WGS84 are 41.831944°, -87.701389°, corresponding to 41° 49′ 55.00″ N, 87° 42′ 5.00″ 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 SOUTH SANITARY — NGS ME1801 — 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)41.831944, -87.701389
WGS84 (DMS)41° 49′ 55.00″ N, 87° 42′ 5.00″ W
UTM zone (approx.)Zone 16N (approx.)
Elevation183.63 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
130 — NGS ME1799 — Chicago, US
0.3 km away · US
US NGS · triangulation station
CHICAGO RAD STA WHFC MAST — NGS ME2698
0.4 km away · US
US NGS · triangulation station
V 135 — NGS ME1797 — Chicago, US
1.1 km away · US
US NGS · triangulation station
CHICAGO POLICE RAD TWR — NGS ME2748
1.2 km away · US
US NGS · triangulation station
R 135 — NGS ME1804 — Chicago, US
1.5 km away · US
US NGS · triangulation station
047 COC — NGS ME2750 — Chicago, US
1.5 km away · US

Frequently asked questions

What is SOUTH SANITARY — NGS ME1801 — Chicago, US?

SOUTH SANITARY — NGS ME1801 — Chicago, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #215582 and sits at an elevation of 183.6 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of SOUTH SANITARY — NGS ME1801 — Chicago, US?

The position of SOUTH SANITARY — NGS ME1801 — Chicago, US in WGS84 is 41.831944°, -87.701389° (decimal), or 41° 49′ 55.00″ N, 87° 42′ 5.00″ 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.