The Saddle Ridge 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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Saddle Ridge’s center stands about 4,460 ft above sea level. Within three miles the land runs from 4,270 ft to 4,590 ft, a difference of 320 ft: rolling country. The highest named summit within 15 miles is Judson Hills, about 4,900 ft, 12 miles northwest.
Under the town center the state geologic map shows Older eolian deposits (sand, silt), from the Quaternary, less than 2.6 million years old.
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 34×. 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, silt. Age: Quaternary, less than 2.6 million years old. About 13 mi of the line.
Sand, silt. Age: Quaternary, less than 2.6 million years old. About 4 mi of the line.
Gravel, unconsolidated. Age: Pleistocene, less than 0.5 million years old. About 3 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Sandstone. Age: Late Cretaceous, 66 to 100 million years old. About 2 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 Saddle Ridge reaches the Gulf of America by way of the South Platte, the Platte, the Missouri and the Mississippi: about 2,280 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 Saddle Ridge; river miles along the main stem, rounded.
