The Leggett 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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Leggett’s center stands about 1,000 ft above sea level. Within three miles the land runs from 760 ft to 3,060 ft, a difference of 2,300 ft: mountain country. The highest named summit within 15 miles is Iron Peak, about 4,430 ft, 13 miles east-southeast.
Under the town center the state geologic map shows Tertiary-Cretaceous Coastal Belt Rocks (sandstone, mudstone), from the Late Cretaceous to Pliocene, 2.6 to 100 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, mudstone. Age: Late Cretaceous to Pliocene, 2.6 to 100 million years old. About 11 mi of the line.
Sandstone, mudstone. Age: Jurassic to Cretaceous, 66 to 202 million years old. About 7 mi of the line.
Serpentinite. Age: Middle Jurassic to Late Jurassic, 145 to 175 million years old. About 3 mi of the line.
Mudstone, sandstone. Age: Paleocene to Late Eocene, 34 to 66 million years old. About 0.6 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 Leggett reaches the Pacific Ocean by way of the South Fork Eel and the Eel: about 110 river miles.
65 miles of the trip are on the South Fork Eel.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Leggett; river miles along the main stem, rounded.
