US: Several agencies have partnered to update the height of Mount McKinley this summer. The new GPS survey will update the commonly accepted elevation of McKinley’s peak, 20,320 ft. The last survey was completed in 1953, after which, surveying technology and processes have improved greatly.
The USGS, along with NOAA’s National Geodetic Survey (NGS), and the University of Alaska Fairbanks (UAF), are supporting the GPS survey. The survey party is being led by CompassData, a subcontractor for Dewberry on a task awarded under the USGS’ Geospatial Products and Services Contract (GPSC).
Using modern GPS survey equipment and techniques, along with better gravity data to improve the geoid model in Alaska, the partners will be able to report the summit elevation with a much higher level of confidence than has been possible in the past. The newly surveyed elevation is expected to be published by the National Geodetic Survey in late August.