The Lebam 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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16° on Nov. 14, 2014, the coldest reading for this week of the year since 1980. Next is 19° in 1985.
Lebam’s center stands about 210 ft above sea level. Within three miles the land runs from 150 ft to 1,070 ft, a difference of 920 ft: steep hill country. The highest named summit within 15 miles is Walville Peak, about 2,460 ft, 7 miles east-northeast.
Under the town center the state geologic map shows Alluvium (silt, sand), from the Holocene, less than 12,000 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 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.
Sandstone, siltstone. Age: Miocene, 5.3 to 23 million years old. About 9 mi of the line.
Basalt. Age: Early Paleocene to Middle Eocene, 40 to 64 million years old. About 7 mi of the line.
Sandstone. Age: Early Eocene to Middle Eocene, 38 to 56 million years old. About 4 mi of the line.
Sandstone, siltstone. Age: Middle Eocene to Early Miocene, 16 to 48 million years old. About 3 mi of the line.
Silt, sand. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Basalt, basaltic-andesite. Age: Late Eocene to Oligocene, 23 to 38 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. 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 Lebam reaches the Pacific Ocean by way of Half Moon Creek and the Willapa: about 35 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lebam; river miles along the main stem, rounded.
Lebam has a warm-summer Mediterranean climate. Summer afternoons average 73° in August; winter nights fall to about 32° in February. About 84 inches of rain fall in a normal year, with about 1 inch of snow.
On November 14 Lebam normally reaches 52° and falls to 35°. The record high is 61°, in 2021; the record low 16°, in 2014. The most rain on this date, 2.72 in, fell in 2001.
Normals 1991–2020 and records since 1980 at Raymond 2 S, 11 miles northwest, 180 ft lower. NOAA, through RCC-ACIS.
