T 146 — NGS JC0017 — Pontoon Beach, US

USNGStrigunknown#6931
Latitude
38.702778°
Longitude
-90.065000°
Ortho h
127.46 m
Verifications
0
Last checked
Never
This triangulation station is part of the National Geodetic Survey's network of control points that form the foundation of the United States' geodetic reference framework. Positioned near Pontoon Beach, Illinois at coordinates 38.70278°N, 90.06500°W, this trig point serves as a horizontal control monument for surveying and mapping operations across the region. Triangulation stations like this one establish precise positional references that surveyors, engineers, and cartographers depend upon for accurate fieldwork and coordinate determination. The point's location in southwestern Illinois places it within the lower Mississippi River valley corridor. Documentation and verification of such geodetic control monuments remain essential for maintaining the integrity of the national survey network, ensuring that subsequent surveys and infrastructure projects maintain positional consistency and accuracy over time.

Verify this point

Sign in to submit a verification from the field.

Verification history (0)

No verifications yet. Be the first to check this point!
🛰️ Satellite view
ESRI World Imagery · zoom 16 (~1 m/px)
Open in Google Earth →
Satellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, USSatellite imagery of T 146 — NGS JC0017 — Pontoon Beach, US, US
🗺️ Google Maps🚗 Street View🅱️ Bing Maps🌐 OpenStreetMap
Imagery © Esri · Earthstar Geographics · USGS · NASA · All providers credited

T 146 — NGS JC0017 — Pontoon Beach, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #6931 on SurveyingPedia and sits at an approximate elevation of 127.5 metres. Its coordinates in WGS84 are 38.702778°, -90.065000°, corresponding to 38° 42′ 10.00″ N, 90° 3′ 54.00″ 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 T 146 — NGS JC0017 — Pontoon Beach, 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)38.702778, -90.065000
WGS84 (DMS)38° 42′ 10.00″ N, 90° 3′ 54.00″ W
UTM zone (approx.)Zone 15N (approx.)
Elevation127.46 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
V 146 — NGS JC0015 — Pontoon Beach, US
0.8 km away · US
US NGS · triangulation station
W 146 — NGS JC0014 — Madison County, US
2.3 km away · US
US NGS · triangulation station
X 146 RESET — NGS JC0013 — Collinsville, US
4.1 km away · US
US NGS · triangulation station
Y 146 — NGS JC0011 — Collinsville, US
4.9 km away · US
US NGS · triangulation station
IDOT 8 — NGS DE9205 — Collinsville, US
4.9 km away · US
US NGS · triangulation station
SUGAR LOAF MOUND — NGS JC1575 — Collinsville, US
5.0 km away · US

Frequently asked questions

What is T 146 — NGS JC0017 — Pontoon Beach, US?

T 146 — NGS JC0017 — Pontoon Beach, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #6931 and sits at an elevation of 127.5 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of T 146 — NGS JC0017 — Pontoon Beach, US?

The position of T 146 — NGS JC0017 — Pontoon Beach, US in WGS84 is 38.702778°, -90.065000° (decimal), or 38° 42′ 10.00″ N, 90° 3′ 54.00″ 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.