The Broadwater 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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Showers likely
Broadwater’s center stands about 3,590 ft above sea level. Within three miles the land runs from 3,560 ft to 3,960 ft, a difference of 400 ft: hilly country. The highest named summit within 15 miles is Reilly Hill, about 4,400 ft, 14 miles north-northwest.
Under the town center the state geologic map shows White River Group (clay), from the Early Oligocene to Late Oligocene, 23 to 34 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 24×. 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. Age: Early Oligocene to Late Oligocene, 23 to 34 million years old. About 11 mi of the line.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 10 mi of the line.
Sand, volcanic. Age: Late Oligocene to Miocene, 5.3 to 28 million years old. About 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 Broadwater reaches the Gulf of America by way of the North Platte, the Platte, the Missouri and the Mississippi: about 2,210 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Broadwater; river miles along the main stem, rounded.
