The Milton 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.
Milton’s center stands about 990 ft above sea level. Within three miles the land runs from 960 ft to 1,200 ft, a difference of 240 ft: rolling country. The highest named summit within 15 miles is Sawnee Mountain, about 1,940 ft, 11 miles northeast.
Under the town center the state geologic map shows Biotitic Gneiss / Mica Schist/ Amphibolite (amphibolite, biotite-gneiss, mica-schist), from the Precambrian to Paleozoic.
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 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 16 mi of the line.
Gneiss, mica-schist, amphibolite. Age: Precambrian to Paleozoic. About 6 mi of the line.
Age: Precambrian to Paleozoic. About 1 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. About 0.9 mi of the line.
Age: Precambrian to Paleozoic. About 0.3 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 Milton reaches Mobile Bay and the Gulf of America by way of Chicken Creek, the Little River, the Etowah, the Coosa, the Alabama and the Mobile: about 720 river miles.
Lakes on the way: Lay Lake and Allatoona Lake.
310 miles of the trip are on the Alabama.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Milton; river miles along the main stem, rounded.