The Hard Rock 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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Mostly sunny; warmer
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Chance of showers; cooler
Hard Rock’s center stands about 6,020 ft above sea level. Within three miles the land runs from 5,790 ft to 6,240 ft, a difference of 450 ft: hilly country. The highest named summit within 15 miles is Ziltahjini Peak, about 7,070 ft, 13 miles north.
Under the town center the state geologic map shows Sedimentary rocks of the Late Cretaceous Mesaverde Group (sandstone, shale, coal), from the Late Cretaceous, 84 to 88 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 19×. 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, coal. Age: Late Cretaceous, 84 to 88 million years old. About 18 mi of the line.
Sandstone, shale. Age: Late Cretaceous, 88 to 97 million years old. About 4 mi of the line.
Silt, clay. Age: Holocene, less than 10,000 years old. About 2 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 Hard Rock reaches the Gulf of California by way of Oraibi Wash, Polacca Wash, Corn Creek Wash, the Little Colorado and the Colorado: about 940 river miles.
Lakes on the way: Lake Mead, Lake Mohave and Lake Havasu.
290 miles of the trip are on the Colorado.
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 Hard Rock; river miles along the main stem, rounded.
