The Haverhill 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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6.93 inches of rain fell in two days, the most for this week of the year since records began in 1888. The next wettest, 4.88 inches, fell in 1992.
Haverhill’s center stands about 20 ft above sea level. Within three miles the land runs from 10 ft to 40 ft, a difference of 30 ft: nearly flat ground.
Under the town center the state geologic map shows Anastasia Formation (sand, limestone), from the Pleistocene, less than 2.6 million years old.
The section below crosses 2 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.
Sand, limestone. Age: Late Pliocene to Pleistocene, less than 3.6 million years old. About 11 mi of the line.
Sand, limestone. Age: Pleistocene, less than 2.6 million years old. About 6 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.
Haverhill has a tropical rainforest climate. Summer afternoons average 90° in July; winter nights fall to about 58° in January. About 62 inches of rain fall in a normal year.
On November 14 Haverhill normally reaches 80° and falls to 66°. The record high is 87°, in 1948; the record low 37°, in 1906. The most rain on this date, 3.07 in, fell in 1926.
Normals 1991–2020 and records since 1888 from the West Palm Beach Area threaded record (Donald J. Trump International Airport, here). NOAA, through RCC-ACIS.
