Newhalem, Washington (Wikipedia)

downstream of the Skagit River

Marblemount, Washington (Wikipedia) Marblemount is a census-designated place in Skagit County, Washington, United States. The population was 286 at the 2020 census. It is included in the Mount Vernon–Anacortes, Washington Metropolitan Statistical Area.

Newhalem (Lushootseed: dxʷʔiyb) is a small unincorporated community on the Skagit River in the western foothills of the North Cascades, in Whatcom County, northwestern Washington, United States.

Skagit County, Washington (Wikipedia) Skagit County /ˈskædʒɪt/ is a county in the U.S. state of Washington. As of the 2020 census, the population was 129,523. The county seat and largest city is Mount Vernon. The county was formed in 1883 from Whatcom County and is named for the Skagit Indian tribe, which has been indigenous to the area prior to European-American settlement.
Skagit River (Wikipedia) The Skagit River (/ˈskædʒɪt/ SKAJ-it) is a river in southwestern British Columbia in Canada and northwestern Washington in the United States, approximately 150 mi (240 km) long. The river and its tributaries drain an area of 1.7 million acres (690,000 hectares) of the Cascade Range along the northern end of Puget Sound and flows into the sound.