The Lake Ellsworth Addition 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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92° on Nov. 15, 2025, the hottest reading for this week of the year since 1912. Next is 86° in 2021.
Lake Ellsworth Addition’s center stands about 1,270 ft above sea level. Within three miles the land runs from 1,220 ft to 1,360 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Mount Scott, about 2,450 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Alluvium (fine-detrital), from the Holocene, less than 12,000 years old.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 27×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 7 mi of the line.
Sandstone. Age: Permian, 252 to 299 million years old. About 5 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Conglomerate. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
Limestone, dolostone, siltstone. Age: Cambrian, 487 to 497 million years old. About 0.9 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 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 Lake Ellsworth Addition reaches the Gulf of America by way of Lake Ellsworth, East Cache Creek, Cache Creek, the Red River, the Atchafalaya and the Lower Atchafalaya: about 1,120 river miles.
Lake on the way: Lake Ellsworth.
880 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Lake Ellsworth Addition; river miles along the main stem, rounded.
Lake Ellsworth Addition has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 27° in January. About 28 inches of rain fall in a normal year.
On November 14 Lake Ellsworth Addition normally reaches 65° and falls to 39°. The record high is 86°, in 2025; the record low 12°, in 1916. The most rain on this date, 1.31 in, fell in 1923.
Normals 1991–2020 and records since 1912 from the Lawton Area threaded record (Lawton Municipal Airport, 20 miles south-southwest, 200 ft lower). NOAA, through RCC-ACIS.
