In February 2018, the CSRC published a new geodetic datum for California called “CSRS Epoch 2017.50 (NAD83)” under a Caltrans contract to SIO/SOPAC. The new epoch-date coordinates have been embedded in the RTCM 3.0 data streams since March 1, 2018.

June 16: The CSRC 2017.50 map is now accessible via QR code. Use the QR code below. (If needed, instructions are available here.)