Named by James McEvoy [1862–1935] after S. Derr, a packer and guide from Edmonton.

Fourteen miles in a straight line from the Athabasca, Derr Creek, the largest tributary of the Miette, fiows in through three separate mouths. The valley is here wider than elsewhere and the dry open tract of grassy land between the branching mouths of Derr Creek is known as Dominion prairie.

— McEvoy 1900

This name appears on the Jobe map but is not mentioned in her report.

On July 30th [1914] we left Grant Brook station on the Grand Trunk Pacific Railway. We traveled with an outfit of four saddle horses and four pack horses along the Moose River, a three days’ journey to Moose Pass.

Location approximate. Possibly the lake known locally as Blueberry Lake.

Possibly the Meadow Lake of the Mary Jobe map of 1915.

The Blueberry Lake trail starts just past 42 km on the Holmes Forest Service Road, about 10 km east of McBride. There is a small gravel pit for parking and the signed trailhead is just past. The trailhead is a resupply point on the Great Divide Trail.

Probably named for local fauna.

This name is associated with the report of a British mountaineering party that attempted an ascent of Mount Robson in 1910. John Norman Collie [1859–1942], Arnold Louis Mumm [1859–1927], and Moritz Inderbinen [1856–1926] were assisted by Fred Stephens [1897–1920] and John Yates [1880–?]. After failing to make an attempt on Robson, they headed north up the Smoky River valley.

Here they came to a beautiful lake with two small islands, each with a single fir tree growing on it. Twintree Lake, as it was naturally named, was situated ten miles north of Moose Pass, the route by which they had first entered this country.

— Taylor