The Yachats plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
Yachats’s center stands about 130 ft above sea level. Within three miles the land runs from 0 ft to 1,530 ft, a difference of 1,530 ft: steep hill country. Open water lies within three miles. The highest named summit within 15 miles is Cummins Peak, about 2,510 ft, 8 miles southeast.
Under the town center the state geologic map shows Porphyritic basalt, from the Late Eocene, 34 to 38 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 8×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt. Age: Late Eocene, 34 to 38 million years old. About 12 mi of the line.
Sandstone. Age: Middle Eocene, 38 to 48 million years old. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Yachats reaches the Pacific Ocean by way of the Yachats: about 1 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Yachats; river miles along the main stem, rounded.