Royal Canadian Air Force Station Yorkton (ADC ID: C-51) was a Long Range Radar (LRR) and Ground Air Transmitter Receiver (GATR) facility of the Pinetree Line. The site was SAGE compatible from day one. It was located near Yorkton, Saskatchewan, Canada. The White Spruce Youth Treatment Centre took over the site as a youth addiction facility until 1998 and now is the site of Orcadia Youth Residence as a youth custody facility. A lot of the original buildings remain in good condition.