The St. Agatha 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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66° on Nov. 11, 2020, the hottest reading for this week of the year since 1996. Next is 63° in 2002.
St. Agatha’s center stands about 740 ft above sea level. Within three miles the land runs from 580 ft to 950 ft, a difference of 370 ft: rolling country. The highest named summit within 15 miles is Glass Hill, about 1,270 ft, 8 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 22×. 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, sandstone. Age: Ordovician, 445 to 487 million years old. About 6 mi of the line.
Mudstone, sandstone. Age: Early Devonian, 410 to 414 million years old. About 5 mi of the line.
Sandstone, mudstone. Age: Silurian to Devonian, 359 to 445 million years old. About 5 mi of the line.
Mudstone, sandstone. Age: Silurian, 422 to 445 million years old. About 1 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 St. Agatha reaches the Bay of Fundy and the Atlantic Ocean by way of Long Lake, Square Lake, the Fish and the Saint John: about 320 river miles.
Lakes on the way: Square Lake and Long Lake.
270 miles of the trip are on the Saint John.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of St. Agatha; river miles along the main stem, rounded.
St. Agatha has a warm-summer humid continental climate. Summer afternoons average 76° in July; winter nights fall to about 3° in January. About 33 inches of rain fall in a normal year.
On November 14 St. Agatha normally reaches 39° and falls to 26°. The record high is 54°, in 2006; the record low 5°, in 2019. The most rain on this date, 1.49 in, fell in 2006.
Normals 1991–2020 and records since 1996 at Frenchville Northern Aroostook Airport, 3 miles north, 240 ft higher. NOAA, through RCC-ACIS.
