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Global Positioning System> CBS Files for Download

CBS Files

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(formerly Bridgewater, VA)
US Forest Service – GW NF Dry River RD

CBS Year Month Date (from) Date (to)

Note: If your query yields a blank page check the above form for correct data entry. If it is still blank then there is no data available for the requested times or there is a problem with the search.

Alternatively, click below for a full listing of all reference files available from this website for this CBS.

Display all files available at Harrisonburg, VA


  • Latitude: 38° 22' 58.00963" North
  • Longitude: 78° 56' 06.55856" West
  • Horizontal Datum: NAD83
  • Elevation: 343.88 meters above ellipsoid
  • Receiver: 12 Channel TRIMBLE Maxwell chip receiver
  • Tracking epoch (sec.): Position at 5 seconds; SYNC measure at 5 seconds


  • Contact Person: Dave Armstrong
  • Address: US Forest Service, George Washington NF, 401 Oakwood Drive, Harrisonburg, VA 22801
  • Telephone: 540-432-8268
  • E-Mail:


  • Data is available in receiver dependent Trimble .SSF format. RINEX is currently not supported.
  • Data can be downloaded via this website (
  • File name: Gyyyymmddhh.EXE where G=Harrisonburg Office; yyyy=year; mm=month; dd=day; hh=hour in GPS time. The .EXE files are compressed and self-extracting ZIP files. File length is one hour.
  • Data is kept for 90 days on the website. Older files available on request.
  • Additional comments: Operation is 24 hours per day; 7 days per week. Files are usually available 5 minutes after the hour.

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