The Cordova 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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79° on Nov. 15, 2025, the hottest reading for this week of the year since 1925. Next is 78° in 2016.
Cordova’s center stands about 1,570 ft above sea level. Within three miles the land runs from 1,500 ft to 1,580 ft, a difference of 80 ft: gently rolling country.
Under the town center the state geologic map shows Greenhorn Limestone and Graneros Shale (shale, limestone), from the Late Cretaceous, 66 to 100 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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Late Cretaceous, 66 to 100 million years old. About 11 mi of the line.
Shale, limestone. Age: Late Cretaceous, 66 to 100 million years old. About 8 mi of the line.
Sandstone, shale. Age: Early Cretaceous, 100 to 145 million years old. About 5 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 Cordova reaches the Gulf of America by way of North Fork Johnson Creek, Johnson Creek, the West Fork Big Blue, the Big Blue, the Kansas, the Missouri and the Mississippi: about 1,900 river miles.
Lake on the way: Tuttle Creek Lake.
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 Cordova; river miles along the main stem, rounded.
Cordova has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 12° in January. A normal year brings about 24 inches of snow; with the rain, that comes to about 29 inches of water.
Normals 1991–2020 and records since 1925 at Friend 3 E, 8 miles east-southeast. NOAA, through RCC-ACIS.
