The Milton Mills 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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76° on Nov. 11, 2020, the hottest reading for this week of the year since 1953. Next is 73° in 2022.
Milton Mills’s center stands about 550 ft above sea level. Within three miles the land runs from 420 ft to 950 ft, a difference of 530 ft: hilly country. The highest named summit within 15 miles is Copple Crown Mountain, about 1,860 ft, 8 miles west-northwest.
Under the town center the state geologic map shows Lower part of Rangeley Formation (metaclastic), from the Silurian, 434 to 445 million years old.
The section below crosses 10 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 7 mi of the line.
Metaclastic. Age: Silurian, 434 to 445 million years old. About 5 mi of the line.
Tonalite. Age: Early Devonian, 394 to 422 million years old. About 3 mi of the line.
Sandstone, mudstone. Age: Silurian to Devonian, 359 to 445 million years old. About 3 mi of the line.
Granite. Age: Early Cretaceous, 100 to 145 million years old. About 2 mi of the line.
Calc-silicate-rock. Age: Silurian, 434 to 445 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 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 Milton Mills reaches the Atlantic Ocean by way of Miller Brook, the Salmon Falls and the Piscataqua: about 45 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Milton Mills; river miles along the main stem, rounded.
Milton Mills 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 Milton Mills 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, 10 miles east-southeast, 260 ft lower. NOAA, through RCC-ACIS.
