ATL UP CT — NGS HT0875 — Alameda, US

USNGStrigunknown#2998
Latitude
37.779833°
Longitude
-122.279137°
Ellipsoidal h
-28.78 m
Ortho h
3.65 m
Verifications
0
Last checked
Never
This is a triangulation station within the National Geodetic Survey network, a foundational component of the United States' surveying and mapping infrastructure. Located near Alameda, California, at coordinates 37.77983°N, 122.27914°W, this trig point serves as a control station for establishing accurate horizontal and vertical reference frameworks across the region. The negative ellipsoidal elevation of -28.8 meters indicates a position below the WGS 84 ellipsoid. Such monuments provide essential ground control for cadastral surveys, engineering projects, and geographic information systems. Verification and documentation of these reference points remain critical for maintaining the integrity of surveying networks and ensuring consistency in large-scale mapping efforts. Active participation in monument recovery and condition assessment programs supports the continued utility of the NGS network for professional surveying practice.

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ATL UP CT — NGS HT0875 — Alameda, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #2998 on SurveyingPedia and sits at an approximate elevation of 3.6 metres. Its coordinates in WGS84 are 37.779833°, -122.279137°, corresponding to 37° 46′ 47.40″ N, 122° 16′ 44.89″ 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 ATL UP CT — NGS HT0875 — Alameda, 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)37.779833, -122.279137
WGS84 (DMS)37° 46′ 47.40″ N, 122° 16′ 44.89″ W
UTM zone (approx.)Zone 10N (approx.)
Elevation3.65 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
WEB ATL — NGS HT0874 — Alameda, US
0.2 km away · US
US NGS · triangulation station
ATL FIFTH 2 — NGS HT0877 — Alameda, US
0.3 km away · US
US NGS · triangulation station
WEBSTER — NGS HT0873 — Alameda, US
0.3 km away · US
US NGS · triangulation station
WEB VISTA — NGS HT2947 — Alameda, US
0.4 km away · US
US NGS · triangulation station
PAC SIXTH — NGS HT2938 — Alameda, US
0.4 km away · US
US NGS · triangulation station
WEB PAC — NGS HT0867 — Alameda, US
0.4 km away · US

Frequently asked questions

What is ATL UP CT — NGS HT0875 — Alameda, US?

ATL UP CT — NGS HT0875 — Alameda, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #2998 and sits at an elevation of 3.6 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of ATL UP CT — NGS HT0875 — Alameda, US?

The position of ATL UP CT — NGS HT0875 — Alameda, US in WGS84 is 37.779833°, -122.279137° (decimal), or 37° 46′ 47.40″ N, 122° 16′ 44.89″ W in degrees-minutes-seconds. For planar surveys in United States this falls approximately in UTM Zone 10N (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.