H 134 O/S — NGS AJ2484 — Wilmette, US

USNGStrigunknown#215649
Latitude
42.079408°
Longitude
-87.721693°
Ellipsoidal h
157.99 m
Ortho h
191.83 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network, which establishes and maintains the fundamental geodetic control framework for the United States. Located near Wilmette, Illinois, at coordinates 42.07941° N, 87.72169° W, this trig point serves as a reference station for surveying and mapping operations across the region. Triangulation stations of this type provide precise horizontal control through a system of intervisible points established across the landscape. The ellipsoidal elevation of 158.0 meters contributes to the three-dimensional control network essential for accurate surveying work. Verification and documentation of such benchmarks remains critical for surveyors, engineers, and geospatial professionals who depend on reliable reference points for boundary determination, construction layout, and mapping projects. Maintaining records of these control points ensures continuity in surveying practices and supports infrastructure development across the nation.

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H 134 O/S — NGS AJ2484 — Wilmette, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #215649 on SurveyingPedia and sits at an approximate elevation of 191.8 metres. Its coordinates in WGS84 are 42.079408°, -87.721693°, corresponding to 42° 4′ 45.87″ N, 87° 43′ 18.10″ 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 H 134 O/S — NGS AJ2484 — Wilmette, 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)42.079408, -87.721693
WGS84 (DMS)42° 4′ 45.87″ N, 87° 43′ 18.10″ W
UTM zone (approx.)Zone 16N (approx.)
Elevation191.83 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
05 NO 3301 — NGS NG0129 — Wilmette, US
0.1 km away · US
US NGS · triangulation station
H 134 — NGS NG0237 — Wilmette, US
0.1 km away · US
US NGS · triangulation station
KENILWORTH — NGS NG0131
0.8 km away · US
US NGS · triangulation station
RV 22 — NGS NG0128 — Wilmette, US
0.8 km away · US
US NGS · triangulation station
WILMETTE — NGS NG0127
0.9 km away · US
US NGS · triangulation station
J 134 — NGS NG0238 — Wilmette, US
0.9 km away · US

Frequently asked questions

What is H 134 O/S — NGS AJ2484 — Wilmette, US?

H 134 O/S — NGS AJ2484 — Wilmette, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #215649 and sits at an elevation of 191.8 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of H 134 O/S — NGS AJ2484 — Wilmette, US?

The position of H 134 O/S — NGS AJ2484 — Wilmette, US in WGS84 is 42.079408°, -87.721693° (decimal), or 42° 4′ 45.87″ N, 87° 43′ 18.10″ 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.