The Jasper 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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Jasper’s center stands about 320 ft above sea level. Within three miles the land runs from 290 ft to 570 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Lockhart Hill, about 820 ft, 13 miles west-southwest.
Under the town center the state geologic map shows Pottsville Formation (upper part) (shale, siltstone, sandstone), from the Carboniferous, 299 to 324 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 44×. 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, siltstone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 24 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 Jasper reaches Mobile Bay and the Gulf of America by way of Town Creek, Cane Creek, the Mulberry Fork, the Black Warrior, the Tombigbee and the Mobile: about 440 river miles.
170 miles of the trip are on the Tombigbee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Jasper; river miles along the main stem, rounded.
