Caltrans - District 6
Malcolm Dougherty
District 6 Director
Serving Fresno, Kern, Kings, Madera, and Tulare Counties
District 6 Land Surveys
- D6 Land Surveys Home
- Central Valley Spatial Reference Network (CVSRN) Home
- CVSRN Map
- D6 Land Surveying FAQ

Land Surveys Office Reference Station
Reference Station Coarsegold - COMA
Location: Caltrans Coarsegold Maintenance Station
Owner: Caltrans District 6 Surveys
GPS Antenna with Clear Raydome |
GPS Equipment Vault |
![]() |
![]() |
GPS Equipment Used at COMA |
Custom Built GPS Antenna Cable Using Heliax |
![]() |
![]() |




