The Seaville 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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80° on Nov. 15, 1993, the hottest reading for this week of the year since 1943. Next is 77° in 1955.
Seaville’s center stands about 30 ft above sea level. Within three miles the land runs from 0 ft to 50 ft, a difference of 50 ft: nearly flat ground. Open water lies within three miles.
Under the town center the state geologic map shows Cohansey Formation (sand), from the Middle Miocene, 12 to 14 million years old.
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.
Sand. Age: Middle Miocene, 12 to 14 million years old. About 15 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 Seaville reaches the Atlantic Ocean by way of Cedar Swamp Creek and the Tuckahoe: about 11 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Seaville; river miles along the main stem, rounded.
Seaville has a humid subtropical climate. Summer afternoons average 87° in July; winter nights fall to about 25° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Seaville normally reaches 58° and falls to 37°. The record high is 75°, in 1989; the record low 15°, in 1986. The most rain on this date, 2.85 in, fell in 1972.
Normals 1991–2020 and records since 1943 from the Atlantic City Area threaded record (Atlantic City International Airport, 18 miles north-northeast). NOAA, through RCC-ACIS.
