Not an official name.

Buried in the McBride cemetery:
Harstad, Sig   1896 – 1979
Harstad, Eva May   1914 – 1996
Harstad, Leon S.   1944 – 2008
Harstad, Robert A.   1949 – 1993
Harstad, Sheena Maree   1969 – 1970

There is an entry for Mount Sig Harstad in the Cebuano Wikipedia, where we find that “The land around Mount Sig Harstad is mostly mountainous, but immediately surrounding it are hills. The highest point in the vicinity has an elevation of 2,816 meters and is 2.6 km south of Mount Sig Harstad. Less than 2 people per square kilometer around Mount Sig Harstad. The nearest larger town is McBride, 19.4 km north of Mount Sig Harstad. The area around Mount Sig Harstad is almost completely covered in grass.”

There is also a Mount Sig Harstad page on Geonames.

See Shelby Road.

Adopted 1987 on 93H/8, as submitted in 1985 by Water Management Branch, Prince George. Name used on water licences (earliest date not cited). Origin/significance not explained.

Yellowhead Pass National Historic Site

Athabasca Pass National Historic Site

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)