The Summer 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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Summer Shade’s center stands about 920 ft above sea level. Within three miles the land runs from 780 ft to 1,120 ft, a difference of 340 ft: rolling country. The highest named summit within 15 miles is Graven Hill, about 1,140 ft, 2 miles east-southeast.
Under the town center the state geologic map shows Renfro and Muldraugh Members of Borden Formation and Fort Payne Formation, undivided (dolostone, limestone), from the Carboniferous, 324 to 359 million 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 38×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone, limestone. Age: Carboniferous, 324 to 359 million years old. About 14 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Limestone. Age: Ordovician, 445 to 487 million years old. About 2 mi of the line.
Sand, silt. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 1 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 Summer Shade reaches the Gulf of America by way of Glover Creek, Falling Timber Creek, Skaggs Creek, the Barren, the Green River, the Ohio and the Mississippi: about 1,430 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Summer Shade; river miles along the main stem, rounded.
