The Corinna 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.
Mostly cloudy
Mostly cloudy; warmer
Partly cloudy
Mostly sunny
Mostly sunny
Mostly sunny
Partly cloudy
73° on Nov. 11, 2020, the hottest reading for this week of the year since 1947. Next is 70° in 2002.
Corinna’s center stands about 290 ft above sea level. Within three miles the land runs from 190 ft to 540 ft, a difference of 350 ft: rolling country. The highest named summit within 15 miles is Saint Albans Mountain, about 1,090 ft, 10 miles west-northwest.
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 27×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Schist, slate. Age: Silurian, 428 to 445 million years old. About 20 mi of the line.
Quartzite, calc-silicate-rock. Age: Silurian to Devonian, 359 to 445 million years old. About 4 mi of the line.
Marble, calc-silicate-rock, metasedimentary. Age: Silurian, 428 to 445 million years old. About 0.6 mi of the line.
Sandstone, shale. Age: Silurian, 422 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 Corinna reaches the Atlantic Ocean by way of the East Branch Sebasticook, the Sebasticook and the Kennebec: about 110 river miles.
Lake on the way: Sebasticook Lake.
60 miles of the trip are on the Kennebec.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Corinna; river miles along the main stem, rounded.
Corinna has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 6° in January. A normal year brings about 72 inches of snow; with the rain, that comes to about 45 inches of water.
On November 14 Corinna normally reaches 47° and falls to 28°. The record high is 67°, in 2022; the record low 5°, in 2019. The most rain on this date, 1.03 in, fell in 1949.
Normals 1991–2020 and records since 1947 at Corinna, here. NOAA, through RCC-ACIS.
