The Kentfield 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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6.85 inches of rain fell in two days, the most for this week of the year since records began in 1902. The next wettest, 6.57 inches, fell in 1942.
Kentfield’s center stands about 170 ft above sea level. Within three miles the land runs from 0 ft to 2,290 ft, a difference of 2,290 ft: mountain country. The highest named summit within 15 miles is Mount Tamalpais, about 2,570 ft, 3 miles southwest.
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 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Melange. Age: Jurassic to Cretaceous, 66 to 202 million years old. About 11 mi of the line.
Sandstone, mudstone. Age: Jurassic to Cretaceous, 66 to 202 million years old. About 6 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 4 mi of the line.
Sand. Age: Quaternary, less than 2.6 million years old. About 0.9 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 Kentfield reaches San Francisco Bay and the Pacific Ocean by way of Larkspur Creek and Corte Madera Creek: about 4 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Kentfield; river miles along the main stem, rounded.
Kentfield has a warm-summer Mediterranean climate. Summer afternoons average 83° in July; winter nights fall to about 42° in January. About 44 inches of rain fall in a normal year.
On November 14 Kentfield normally reaches 64° and falls to 46°. The record high is 81°, in 2010; the record low 25°, in 1916. The most rain on this date, 3.10 in, fell in 1952.
Normals 1991–2020 and records since 1902 at Kentfield, here. NOAA, through RCC-ACIS.
