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Global Positioning System> CBS Files for Download

CBS Files

Graphic image of the USDA Forest Service shield logo.South Dakota GPS Community Base Station
US Forest Service, Custer National Forest
National Park Service, Jewel Cave National Monument

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 Jewel Cave


  • Latitude: 43 43' 46.6153" North
  • Longitude: 103 49' 46.6522" West
  • Horizontal Datum: NAD83 HARN
  • Elevation: 1631.61 meters height above ellipsoid
  • Receiver: 12 Channel TRIMBLE Maxwell chip receiver
  • Tracking epoch (sec.): Position at 5 seconds; SYNC measure at 5 seconds
  • Station Operation: Operation is 24 hours, 7 days per. week. File transfer is 5 minutes after the hour for all systems
  • The antenna survey monument located in reference to the South Dakota HARN



  • Data is available in receiver dependent Trimble .SSF format. RINEX is not supported at this time.
  • File name: JYMMDDHH.EXE where J=Jewel; Y=year; MM=month; DD=day; HH=hour in GPS time; .EXE files are compressed and self-extracting. File length is one hour.
  • This site is comanaged by the National Park Service and the US Forest Service

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USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.