The Bucks Lake 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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Bucks Lake’s center stands about 5,160 ft above sea level. Within three miles the land runs from 5,000 ft to 6,210 ft, a difference of 1,210 ft: steep hill country. The highest named summit within 15 miles is Bald Eagle Mountain, about 7,170 ft, 5 miles north-northwest.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mafic-volcanic. Age: Permian to Jurassic, 145 to 299 million years old. About 6 mi of the line.
Peridotite, serpentinite. Age: Neoproterozoic to Early Jurassic, 175 to 1,000 million years old. About 6 mi of the line.
Granodiorite. Age: Permian to Tertiary, 2.6 to 260 million years old. About 6 mi of the line.
Slate. Age: Permian to Jurassic, 145 to 299 million years old. About 1 mi of the line.
Phyllite. Age: Paleozoic to Mesozoic, 66 to 542 million years old. About 0.8 mi of the line.
Argillite, phyllite. Age: Permian to Jurassic, 145 to 299 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. 2 smaller units 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 Bucks Lake reaches San Francisco Bay and the Pacific Ocean by way of Bucks Creek, the North Fork Feather, the Feather and the Sacramento: about 200 river miles.
75 miles of the trip are on the Sacramento.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Bucks Lake; river miles along the main stem, rounded.
