The Maupin 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.
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Maupin’s center stands about 1,200 ft above sea level. Within three miles the land runs from 840 ft to 1,910 ft, a difference of 1,070 ft: steep hill country. The highest named summit within 15 miles is Shaniko Butte, about 3,990 ft, 14 miles south-southwest.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×. 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: Early Miocene to Middle Miocene, 12 to 23 million years old. About 9 mi of the line.
Basalt. Age: Middle Miocene, 12 to 16 million years old. About 8 mi of the line.
Sandstone-mudstone. Age: Late Eocene to Early Miocene, 16 to 38 million years old. About 4 mi of the line.
Sandstone, siltstone, mudstone. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 2 mi of the line.
Basalt. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 1 mi of the line.
Andesite. Age: Paleocene to Early Oligocene, 28 to 66 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 Maupin reaches the Pacific Ocean by way of the Deschutes and the Columbia: about 250 river miles.
200 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Maupin; river miles along the main stem, rounded.
