The Lyman 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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Mostly sunny; warmer
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76° on Nov. 11, 2020, the hottest reading for this week of the year since 1953. Next is 73° in 2022.
Lyman’s center stands about 370 ft above sea level. Within three miles the land runs from 170 ft to 470 ft, a difference of 300 ft: rolling country. The highest named summit within 15 miles is Abbott Mountain, about 1,070 ft, 11 miles northwest.
Under the town center the state geologic map shows Carboniferous granite (muscovite accessory mineral), from the Carboniferous, 299 to 359 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 20×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone, limestone. Age: Silurian to Devonian, 359 to 445 million years old. About 9 mi of the line.
Granite. Age: Carboniferous, 299 to 359 million years old. About 6 mi of the line.
Granite. Age: Carboniferous, 299 to 359 million years old. About 5 mi of the line.
Gneiss. Age: Neoproterozoic to Silurian, 422 to 1,000 million years old. About 3 mi of the line.
Sandstone. Age: Late Ordovician to Silurian, 428 to 459 million years old. About 0.8 mi of the line.
Limestone. Age: Silurian to Devonian, 359 to 445 million years old. About 0.3 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 Lyman reaches the Atlantic Ocean by way of the East Outlet, Lords Brook and the Kennebunk: about 20 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lyman; river miles along the main stem, rounded.
Lyman has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 10° in January. About 51 inches of rain fall in a normal year.
On November 14 Lyman normally reaches 49° and falls to 27°. The record high is 71°, in 1989; the record low 9°, in 2019. The most rain on this date, 1.60 in, fell in 2018.
Normals 1991–2020 and records since 1953 at Sanford 2 NNW, 7 miles west-southwest. NOAA, through RCC-ACIS.
