EPF 20 — NGS RD1619 — Clackamas County, US

USNGStrigunknown#5397
Latitude
45.459761°
Longitude
-122.572405°
Ellipsoidal h
47.42 m
Ortho h
70.20 m
Verifications
0
Last checked
Never
This trigonometric station is part of the National Geodetic Survey's fundamental control network, which establishes the geometric framework for surveying and mapping throughout the United States. Located in Clackamas County, Oregon, at coordinates 45.45976° N, 122.57241° W with an ellipsoidal elevation of 47.4 meters, this trig point serves as a reference monument for horizontal and vertical control in the region. Trigonometric stations of this type are established to provide surveyors, engineers, and cartographers with precisely known positions for conducting accurate measurements and establishing local control networks. The NGS network remains essential infrastructure for civil engineering projects, land surveys, and geographic information systems. Verification and documentation of such control points ensure the integrity and reliability of surveying work across the Pacific Northwest and maintain consistency within the national geodetic datum.

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EPF 20 — NGS RD1619 — Clackamas County, US is a triangulation station located in United States, catalogued in the US NGS dataset. The point has been assigned the stable identifier #5397 on SurveyingPedia and sits at an approximate elevation of 70.2 metres. Its coordinates in WGS84 are 45.459761°, -122.572405°, corresponding to 45° 27′ 35.14″ N, 122° 34′ 20.66″ 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 EPF 20 — NGS RD1619 — Clackamas County, 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)45.459761, -122.572405
WGS84 (DMS)45° 27′ 35.14″ N, 122° 34′ 20.66″ W
UTM zone (approx.)Zone 10N (approx.)
Elevation70.20 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
EPF 19 — NGS RD4338 — Clackamas County, US
1.1 km away · US
US NGS · triangulation station
EPF 21 — NGS RD4340 — Portland, US
1.7 km away · US
US NGS · triangulation station
MOUNT SCOTT — NGS RD2442 — Happy Valley, US
1.7 km away · US
US NGS · triangulation station
EPF 18 — NGS RD4337 — Clackamas County, US
2.0 km away · US
US NGS · triangulation station
PORTLAND RAD STA KPOJ CEN MAST — NGS RD2455 — Happy Valley, US
2.1 km away · US
US NGS · triangulation station
PET — NGS RD2465 — Portland, US
2.6 km away · US

Frequently asked questions

What is EPF 20 — NGS RD1619 — Clackamas County, US?

EPF 20 — NGS RD1619 — Clackamas County, US is a triangulation station located in United States, catalogued in the US NGS network. It has the public identifier #5397 and sits at an elevation of 70.2 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.

Where are the exact coordinates of EPF 20 — NGS RD1619 — Clackamas County, US?

The position of EPF 20 — NGS RD1619 — Clackamas County, US in WGS84 is 45.459761°, -122.572405° (decimal), or 45° 27′ 35.14″ N, 122° 34′ 20.66″ 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.