The Gloster 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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Gloster’s center stands about 430 ft above sea level. Within three miles the land runs from 340 ft to 470 ft, a difference of 130 ft: gently rolling country.
Under the town center the state geologic map shows Pascagoula and Hattiesburg formation (clay, sand), from the Miocene, 5.3 to 23 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 56×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, sand. Age: Miocene, 5.3 to 23 million years old. About 13 mi of the line.
Sand, gravel. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 11 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 Gloster reaches Lake Pontchartrain and the Gulf of America by way of Beaver Creek and the Amite: about 160 river miles.
Lake on the way: Lake Maurepas.
110 miles of the trip are on the Amite.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Gloster; river miles along the main stem, rounded.
