The Keams Canyon 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.
Keams Canyon’s center stands about 6,200 ft above sea level. Within three miles the land runs from 6,040 ft to 6,610 ft, a difference of 570 ft: hilly country. The highest named summit within 15 miles is Low Mountain, about 6,870 ft, 14 miles northeast.
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 15×. 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 16 mi of the line.
Sandstone, shale. Age: Late Cretaceous, 88 to 97 million years old. About 5 mi of the line.
Conglomerate, sandstone. Age: Early Miocene to Pleistocene, 2 to 16 million years old. About 3 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 Keams Canyon reaches the Gulf of California by way of Keams Canyon Wash, Polacca Wash, Corn Creek Wash, the Little Colorado and the Colorado: about 930 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 Keams Canyon; river miles along the main stem, rounded.