The Eagle Creek Colony 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.
Partly cloudy
Mostly sunny; warmer
Mostly cloudy
Showers likely; cooler
Partly cloudy
Mostly cloudy
Mostly cloudy
71° on Nov. 14, 2025, the hottest reading for this week of the year since 1912. Next is 69° in 1934.
Eagle Creek Colony’s center stands about 3,600 ft above sea level. Within three miles the land runs from 3,510 ft to 3,800 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Mount Brown, about 6,920 ft, 12 miles north-northeast.
Under the town center the state geologic map shows Eagle Formation (sandstone, sandstone-mudstone), from the Late Cretaceous, 72 to 87 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, sandstone-mudstone. Age: Late Cretaceous, 72 to 87 million years old. About 6 mi of the line.
Sandstone, siltstone, shale. Age: Late Cretaceous, 84 to 87 million years old. About 5 mi of the line.
Shale. Age: Late Cretaceous, 72 to 84 million years old. About 4 mi of the line.
Age: Pleistocene to Holocene, less than 1.8 million years old. About 3 mi of the line.
Sandstone, shale. Age: Late Cretaceous, 72 to 84 million years old. About 2 mi of the line.
Age: Tertiary, 2.6 to 66 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. 3 smaller units 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 Eagle Creek Colony reaches the Gulf of America by way of Eagle Creek, the Marias, the Missouri and the Mississippi: about 3,330 river miles.
Lakes on the way: Lake Oahe, Lake Sakakawea, Lake Fort Peck and Lake Sharpe.
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 Eagle Creek Colony; river miles along the main stem, rounded.
Eagle Creek Colony has a cold semi-arid climate. Summer afternoons average 82° in July; winter nights fall to about 4° in January. About 11 inches of rain fall in a normal year.
On November 14 Eagle Creek Colony normally reaches 42° and falls to 15°. The record high is 71°, in 2025; the record low −17°, in 2014. The most rain on this date, 0.11 in, fell in 1955.
Normals 1991–2020 and records since 1912 at Dunkirk 19 NNE, 12 miles west, 280 ft lower. NOAA, through RCC-ACIS.
