The Denning 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.
Mostly cloudy
Mostly sunny; warmer
Partly cloudy
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
74° on Nov. 11, 2020, the hottest reading for this week of the year since 1898. Next is 70° in 1956.
Denning’s center stands about 2,060 ft above sea level. Within three miles the land runs from 1,690 ft to 3,130 ft, a difference of 1,440 ft: steep hill country. The highest named summit within 15 miles is Slide Mountain, about 4,180 ft, 6 miles east-northeast.
Under the town center the state geologic map shows Upper Walton Formation (shale, sandstone, conglomerate), from the Late Devonian, 359 to 384 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, sandstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 15 mi of the line.
Shale. Age: Middle Devonian to Late Devonian, 359 to 394 million years old. About 3 mi of the line.
Sandstone, conglomerate, shale. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Shale, sandstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Shale, sandstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 0.8 mi of the line.
Sandstone, shale. Age: Middle Devonian, 384 to 388 million years old. About 0.6 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.
A raindrop that lands in Denning reaches Delaware Bay and the Atlantic Ocean by way of the East Branch Neversink, the Neversink, Basher Kill and the Delaware: about 280 river miles.
220 miles of the trip are on the Delaware.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Denning; river miles along the main stem, rounded.
Denning has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 13° in January. A normal year brings about 70 inches of snow; with the rain, that comes to about 53 inches of water.
On November 14 Denning normally reaches 47° and falls to 29°. The record high is 66°, in 1964; the record low 6°, in 1986. The most rain on this date, 1.60 in, fell in 1911.
Normals 1991–2020 and records since 1898 at Liberty 1 NE, 17 miles southwest, 480 ft lower. NOAA, through RCC-ACIS.
