Clowwewalla Indians were located at the falls of Willamette River in Oregon.
Clatsop Indians. The Clatsop centered about Cape Adams, on the south side of Columbia River, extending up the latter as far as Tongue Point and southward on the Pacific coast to Tillamook Head.
Clackamas Indians were located on Clackamas River, claiming the country on the east side of Willamette River from a few miles above its mouth nearly to Oregon City and east as far as the Cascade Mountains in the present states of Oregon and Washington.
Skilloot Indians were located on both sides of Columbia River above and below the mouth of Cowlitz River in present states of Oregon and Washington.
As reported by Lewis and Clark, the Chilluckittequaw Indians lay along the north side of Columbia River, in the present Klickitat and Skamania Counties, from about 10 miles below the Dalles to the neighborhood of the Cascades. Spier (1936) thinks they may have been identical with the White Salmon or Hood River group of Indians and perhaps both. In the latter case we must suppose that they extended to the south side of the Columbia.
Cathlapotle Indians are located on the lower part of Lewis River and the southeast side of the Columbia River, in Clarke County.
Cathlacumup Indians. A Chinookan tribe formerly living on the west bank of the lower mouth of Willamette River, near the Columbia, claiming as their territory the bank of the latter stream from this point to Deer Island, Oreg. Lewis and Clark estimated their number at 450 in 1806. They are mentioned in 1850 by Lane as being associated with the Namoit and Katlaminimim.
Cathlacomatup Indians. A Chinookan tribe residing in 1806, according to Lewis and Clark 1Lewis and Clark, Expeditions, II, 226, 1814, on the south side of Sauvies Island, in the present Multnomah County, Oregon, on a slough of Willamette River. Their estimated number was 170. Footnotes: [ + ] 1. ↩ Lewis and Clark, Expeditions, II, 226, 1814
Clatsop Indians. A Chinookan tribe formerly about Creek Adams on the south side of the Columbia River and extending up the river as far as Tongue Point and south along the coast to Tillamook Head, Oregon.
Clackama Indians. A Chinookan tribe formerly occupying several villages on Clackamas Alaska river, in Clackamas County, Oregon…