The Beaver Valley 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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82° on Nov. 14, 1999, the hottest reading for this week of the year since 1940. Next is 79° in 1995.
Beaver Valley’s center stands about 5,080 ft above sea level. Within three miles the land runs from 4,690 ft to 6,030 ft, a difference of 1,340 ft: steep hill country. The highest named summit within 15 miles is Baker Butte, about 8,060 ft, 9 miles north-northwest.
Under the town center the state geologic map shows Early Proterozoic granitic rocks (granite, granodiorite, tonalite), from the Paleoproterozoic, 1.6 to 1.8 billion years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, shale, limestone. Age: Early Cambrian to Late Mississippian, 330 to 540 million years old. About 7 mi of the line.
Granite, granodiorite, tonalite. Age: Paleoproterozoic, 1.6 to 1.8 billion years old. About 7 mi of the line.
Sandstone, limestone. Age: Permian, 270 to 280 million years old. About 6 mi of the line.
Sandstone, shale, limestone. Age: Middle Pennsylvanian to Permian, 280 to 310 million years old. About 4 mi of the line.
Conglomerate, sandstone. Age: Early Miocene to Pleistocene, 2 to 16 million years old. About 0.8 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 Beaver Valley reaches the Gulf of California by way of the East Verde, the Verde, the Salt River, the Gila and the Colorado: about 500 river miles.
200 miles of the trip are on the Gila.
Often dry. About 50% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Seldom reaches the sea. Dams and canals now take nearly all of the Colorado before its old delta in Mexico.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Beaver Valley; river miles along the main stem, rounded.
Beaver Valley has a hot-summer Mediterranean climate. Summer afternoons average 93° in July; winter nights fall to about 26° in January. A normal year brings about 18 inches of snow; with the rain, that comes to about 20 inches of water.
On November 14 Beaver Valley normally reaches 65° and falls to 31°. The record high is 82°, in 1999; the record low 20°, in 1971. The most rain on this date, 0.85 in, fell in 1993.
Normals 1991–2020 and records since 1940 at Payson, 8 miles south-southwest, 230 ft lower. NOAA, through RCC-ACIS.
