Nature · New Hampshire · summit surface, structures may contribute
Mount Washington: terrain elevation and local relief
Mount Washington uses an approximately 1,913-meter surface estimate in EGM2008 from Copernicus GLO-30. The bounded terrain section has about 1,421 meters of local relief above its lowest sampled point. Published summit surveys are separate references.
≈ 1,913 m
Data-derived estimate- Measurement
- Highest sampled surface in the documented Copernicus terrain section · EGM2008
- Subject or version
- New Hampshire · summit surface, structures may contribute
- In feet, rounded
- 6,277.4 ft (1 ft = 0.3048 m)
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Terrain boundary, base and datum
- Vertical reference
- EGM2008. Published surveys are separate; no datum conversion is applied.
- Highest sampled surface
- 1913.3 m at 44.270556°, -71.303333°.
- Local base
- 491.9 m at 44.301944°, -71.235000°. Lowest sampled point within this bounded terrain section.
- Section bounds in WGS84-G1150
- West -71.372361°, east -71.234583°; south 44.239306°, north 44.302361°.
- View and scale
- Orthographic map section facing north. Equal horizontal and vertical map scales. Approximate grid spacing: 22.2 m east-west and 30.9 m north-south. Lower and surrounding terrain omitted.
produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved
A little more perspective
The USGS eastern-summit table lists Mount Washington at 6,288 feet from the 1982 quadrangle, approximately 1,916.6 meters. This Copernicus section has a highest sample of about 1,913 meters in EGM2008. As a surface model, it can include the effects of summit buildings and vegetation; it is not a bare-rock survey or a measurement to the top of an observatory antenna.
The local-relief view subtracts the lowest sampled point in this section: 491.9 meters at 44.301944° latitude, -71.235000° longitude. This produces about 1,421 meters of relief within the stated boundary. It is not a universal mountain base, a route’s total ascent, or topographic prominence.
The rendered surface uses the public 2021 Copernicus release, primarily based on TanDEM-X observations from 2011–2015 with infill from other sources. It is a surface model rather than a current bare-earth survey. Neutral shading explains the geometry without claiming a snow season or photographic ground texture. No datum conversion or summit correction is applied.
Quick facts
Mount Washington uses an approximately 1,913-meter surface estimate in EGM2008 from Copernicus GLO-30. The bounded terrain section has about 1,421 meters of local relief above its lowest sampled point. Published summit surveys are separate references.
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Sources and measurement notes
- USGS: selected summits east of the Rocky Mountains, dated quadrangle references
- Copernicus DEM: dataset definition, datums and attribution
- Public Copernicus GLO-30 release documentation
- Wikidata: summit-area identity and initial coordinate
- Copernicus source terrain tile 1 (GeoTIFF)
The dataset’s approximately 1,913-meter maximum and the dated 6,288-foot map reference have different provenance. The local-relief value uses the section boundary rather than the foot of the Auto Road.
Source review recorded . Maintained by Ishan Karunaratne. Suggest a correction with a source and the exact measurement being compared.