The Riverside 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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73° on Nov. 12, 2022, the hottest reading for this week of the year since 1951. Next is 70° in 2001.
Riverside’s center stands about 180 ft above sea level. Within three miles the land runs from 10 ft to 250 ft, a difference of 240 ft: rolling country.
Under the town center the state geologic map shows Monmouth Group, Matawan Group and Magothy Formation (clay, sand, gravel), from the Late Cretaceous, 66 to 100 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.
Clay, sand, gravel. Age: Late Cretaceous, 66 to 100 million years old. About 17 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 Riverside reaches Long Island Sound and the Atlantic Ocean by way of the Little River and the Peconic: about 4 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Riverside; river miles along the main stem, rounded.
Riverside has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 20° in January. About 44 inches of rain fall in a normal year.
On November 14 Riverside normally reaches 54° and falls to 34°. The record high is 69°, in 2005; the record low 13°, in 2019. The most rain on this date, 0.62 in, fell in 2000.
Normals 1991–2020 and records since 1951 at Westhampton Gabreski Airport, 4 miles southeast, 140 ft lower. NOAA, through RCC-ACIS.
