The Greer 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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67° on Nov. 17, 2025, the hottest reading for this week of the year since 1971. Next is 66° in 2009.
Greer’s center stands about 8,400 ft above sea level. Within three miles the land runs from 8,220 ft to 9,330 ft, a difference of 1,110 ft: steep hill country. The highest named summit within 15 miles is Mount Baldy, about 11,380 ft, 9 miles southwest.
Under the town center the state geologic map shows Oligocene to Paleocene[?] sedimentary rocks (conglomerate, sandstone), from the Early Paleocene to Early Oligocene, 30 to 65 million years old.
The section below crosses 3 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.
Conglomerate, sandstone. Age: Early Paleocene to Early Oligocene, 30 to 65 million years old. About 10 mi of the line.
Rhyolite, dacite, andesite. Age: Middle Miocene to Pleistocene, 2 to 12 million years old. About 9 mi of the line.
Basalt. Age: Early Pliocene to Holocene, less than 4 million years old. About 5 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 Greer reaches the Gulf of California by way of the Little Colorado and the Colorado: about 1,090 river miles.
Lakes on the way: Lake Mead, Lake Mohave and Lake Havasu.
360 miles of the trip are on the Little Colorado.
Often dry. About 30% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Greer; river miles along the main stem, rounded.
Greer has a dry-summer warm-summer continental climate. Summer afternoons average 71° in June; winter nights fall to about 11° in January. About 27 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1971 at Sunrise Mountain, 6 miles west-southwest, 970 ft higher. NOAA, through RCC-ACIS.
