Considering the confluence of McGregor River and Fraser River to be a fork, then the South Fork of the Fraser River runs up from the fork though Tête Jaune Cache to the headwaters at the Continental Divide in Mount Robson Park.

This nomenclature was formally adopted by the Geographic Board of Canada in 1910, as long-identified on maps and in journals. But in 1915 the Board renamed North Fork of the Fraser River to McGregor River, and Fraser River proper became the main source of the channel, the old South Fork of the Fraser River.(1)

I left Vancouver on May 20th. 1912, with a party of twelve men to survey land within the reserve on the South Fork of the Fraser River, about fifty miles below Tete Jaune Cache. There are three different routes to get into this country, probably the most expeditious one being via Edmonton-the way we went. Taking from Edmonton, by special permission of the Railway Commission, we travelled over the Grand Trunk Pacific as far as the end of steel. which at that time was Resplendent, twenty-nine miles west of the British Columbia-Alberta boundary. Owing to the fact that the Grand Trunk has not been opened for traffic farther west than Hinton, 185 miles west of Edmonton, it was necessary to get this special permission before we were allowed to travel the remaining ninety-eight miles to the end of steel. (2)