The Sudlersville 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.
16° on Nov. 17, 1933, the coldest reading for this week of the year since 1893. Next is 19° in 1920.
Sudlersville’s center stands about 60 ft above sea level. Within three miles the land runs from 50 ft to 130 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Upland Deposits (Eastern Shore) (gravel, sand), from the Pleistocene, less than 2.6 million years old.
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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gravel, sand. Age: Pleistocene, less than 2.6 million years old. About 13 mi of the line.
Silt. Age: Tertiary, 2.6 to 66 million years old. About 7 mi of the line.
Fine-detrital, coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Sand, clay. Age: Miocene, 5.3 to 23 million years old. About 0.4 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 Sudlersville reaches Chesapeake Bay and the Atlantic Ocean by way of Unicorn Branch and the Chester: about 45 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sudlersville; river miles along the main stem, rounded.
Sudlersville has a humid subtropical climate. Summer afternoons average 87° in July; winter nights fall to about 28° in January. A normal year brings about 13 inches of snow; with the rain, that comes to about 48 inches of water.
On November 14 Sudlersville normally reaches 58° and falls to 40°. The record high is 76°, in 1955; the record low 19°, in 2019. The most rain on this date, 2.00 in, fell in 1972.
Normals 1991–2020 and records since 1893 at Dover, 19 miles east. NOAA, through RCC-ACIS.