The East Shore 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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East Shore’s center stands about 4,510 ft above sea level. Within three miles the land runs from 4,500 ft to 7,120 ft, a difference of 2,620 ft: mountain country. The highest named summit within 15 miles is Coyote Peak, about 7,620 ft, 13 miles east-northeast.
Under the town center the state geologic map shows Paleozoic marine rocks, undivided, unit 5 (Northeastern Sierra Nevada) (metasedimentary, metavolcanic), from the Ordovician to Jurassic, 145 to 487 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Andesite, basalt. Age: Late Pliocene to Pleistocene, less than 3.6 million years old. About 8 mi of the line.
Andesite. Age: Devonian to Permian, 252 to 422 million years old. About 4 mi of the line.
Mafic-volcanic, greenstone. Age: Paleozoic to Mesozoic, 66 to 542 million years old. About 3 mi of the line.
Argillite, quartzite, phyllite. Age: Ordovician to Triassic, 202 to 487 million years old. About 3 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Metasedimentary, metavolcanic. Age: Ordovician to Jurassic, 145 to 487 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit along the line are not listed.
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 East Shore reaches San Francisco Bay and the Pacific Ocean by way of Lake Almanor, the North Fork Feather, the Feather and the Sacramento: about 230 river miles.
Lake on the way: Lake Almanor.
75 miles of the trip are on the Sacramento.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of East Shore; river miles along the main stem, rounded.
