Presumably named for its shape, and named before 1919 if “Dome Creek” was derived from the mountain. The watercourse appears on the 1919 Pre-emptor’s map Tête Jaune but not the mountain or the community.

Some relation to gold prospecting.

In September 1911, as construction of the railroad’s tote road approached Tête Jaune Cache, two young American adventurers, A. C. Jennison and D.C. Adams, freighted a canoe through the Yellowhead Pass to Resplendent. They canoed down the Fraser River until they reached the box canyon above Tête Jaune Cache, where their canoe capsized in an eddy and they both drowned. Weeks later their bodies were found, one of them at the point of this island a few miles below the Cache.

Herbert C. (1892–1958) and Ethel G. (1896–1981) Dawson moved to a homestead between Dunster and Shere in the 1930s, after a spell of dry years in Saskatchewan. Herb worked on the railroad, homesteaded, and farmed. They raised six children, their youngest born at Lucerne (CNoR railway point) in 1924. During the 1930s Dawson took his team and wagon to Small Creek to work on the new highway being built from Tête Jaune Cache to Lamming Mills.

Dawson in 1885
Wikipedia

Adopted in 1954 on Columbia River Basin manuscript 75 as labelled on 1895 map of British Columbia; not “Boulder Creek” as labelled on 1911 map of Kootenay District, flowing into Canoe River.

Coordinates of mouth altered and description changed in 1974, following creation of reservoir behind Mica Dam; now flows west into Canoe Reach, Kinbasket Lake.

Presumably refers to George Mercer Dawson [1849–1901], given the early use of the name.

Dawson was a Canadian geologist and surveyor who performed many early explorations in western North America and compiled numerous records of the native peoples, including the Shuswap who were inhabitants of this area.

The Kamloops Indians affirm, that the very highest mountain they know is on the north side of the valley at Tête Jaune Câche, about ten miles from the valley. This is named Yuh-hai-has’-kun, from the appearance of a spiral road running up it. No one has ever been known to reach the top, though a former chief of Tsuk-tsuk-kwälk’, on the North Thompson, was near the top once when hunting goats. When he realized how high he had climbed he became frightened and returned.

— Notes on the Shuswap People of British Columbia, 1891

Dawson was director of the Geological Survey of Canada from 1895 until his death in 1901.

Location approximate.

Leander (died 1925) and Edith (died 1924) Davison and four children moved to North Croydon in 1923. Leander grew up in Nova Scotia, and homesteaded in Alberta after 1900. He married Edith in 1910. When they moved to Croydon, they brought farm machinery, horses, and a cow down the river on a scow. The year after their arrival Edith died during childbirth. Newborn Archie was raised by Elizabeth and Tom McCallum. The next summer Leander died after a fall on a pitchfork. The other four children were raised by Edith’s parents, the Watsons, in Croydon.

Named in 1924 by climbing party of Allen Carpé [1894–1932] and Rollin Thomas Chamberlin [1881–1948], in association with the nearby mountain and pass that they proposed be named Mount David Thompson and David Pass, in the mistaken belief that the pass was the true source of the North Thompson River.

Everett Bogardus, Phil Estwein and Dave Henry, about 1914
Valemount and Area Museum

Dave Henry first visited the Valemount area before 1910. “He and Fulton McKirdy came up the Canoe Valley in a scow from Revelstoke as far as they could,” said Mike Frye, whose family accompanied Henry to the area from North Dakota in 1911. Henry was “one of the best liked in the district, a real story teller,” according to another early settler. He was nicknamed “the Grizzly” because of his hair.

Henry opened the first store at Swift Creek (later named Valemount) in 1912. He is listed as storekeeper in the 1937 Valemount voters’ list, and as a cook in the 1943 Valemount post office directory. He was trail cook for the Hargreaves brothers’ hunting parties for many years, and also trapped in the area. Henry moved to Kamloops in the early 1950s, and from there to a Vernon nursing home. He died in the early 1960s.

Origin notes from BC Geographical Names: Davehenry Creek adopted 12 June 1934, not Avalanche Creek as labelled on Dominion Sectional sheet 262, Yellowhead, 1916, nor Cache Creek as labelled on BC map 3H, 1919. Davehenry Creek confirmed 17 January 1951 on Jasper Park (North). Form of name changed to Dave Henry Creek 8 July 1953 on Columbia River Basin manuscript 79: “flows SW into Canoe River…” (file C.1.53). Location description and coordinates of mouth adjusted 11 March 1974 on 83 D/11, because of flooding of McNaughton (now Kinbasket) Lake.