The Woods Landing-Jelm 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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Woods Landing-Jelm’s center stands about 7,940 ft above sea level. Within three miles the land runs from 7,440 ft to 9,220 ft, a difference of 1,780 ft: steep hill country. The highest named summit within 15 miles is Spruce Mountain, about 9,990 ft, 12 miles northwest.
Under the town center the state geologic map shows Metasedimentary and metavolcanic rocks (gneiss, amphibolite, pelitic-schist), from the Paleoproterozoic, 1.6 to 2.5 billion years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 10×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss, amphibolite, pelitic-schist. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 16 mi of the line.
Clay, silt, sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 8 mi of the line.
Shale. Age: Early Cretaceous, 100 to 145 million years old. About 0.5 mi of the line.
Shale, sandstone. Age: Late Cretaceous, 66 to 100 million years old. 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 Woods Landing-Jelm reaches the Gulf of America by way of Porter Creek, the Laramie, the North Platte, the Platte, the Missouri and the Mississippi: about 2,540 river miles.
Lakes on the way: Wheatland Reservoir Number 2 and Grayrocks Reservoir.
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 Woods Landing-Jelm; river miles along the main stem, rounded.
