The Florien 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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Florien’s center stands about 280 ft above sea level. Within three miles the land runs from 220 ft to 380 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Eagle Hill, about 460 ft, 10 miles east-southeast.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 60×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, clay, lignite. Age: Paleocene, 56 to 66 million years old. About 6 mi of the line.
Clay. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Clay, silt, sand. Age: Eocene, 34 to 56 million years old. About 5 mi of the line.
Clay, sand, lignite. Age: Eocene, 34 to 56 million years old. About 3 mi of the line.
Sand, clay. Age: Eocene, 34 to 56 million years old. About 3 mi of the line.
Clay, marl. Age: Eocene, 34 to 56 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. 1 smaller unit along the line are not listed.
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 Florien reaches the Gulf of America by way of Midkiff Creek, the Bayou Toro and the Sabine: about 200 river miles.
Lake on the way: Sabine Lake.
140 miles of the trip are on the Sabine.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Florien; river miles along the main stem, rounded.
