The Evening Shade 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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Evening Shade’s center stands about 1,130 ft above sea level. Within three miles the land runs from 660 ft to 1,300 ft, a difference of 640 ft: hilly country. The highest named summit within 15 miles is Beaver Mountain, about 1,630 ft, 7 miles east-northeast.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 17×. 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. Age: Carboniferous, 299 to 324 million years old. About 16 mi of the line.
Limestone, shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 5 mi of the line.
Chert, limestone. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 0.9 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 Evening Shade reaches the Gulf of America by way of Vian Creek, the Arkansas and the Mississippi: about 990 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Evening Shade; river miles along the main stem, rounded.
