The Harrison Lake 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
Partly cloudy; warmer
Mostly sunny
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
7° on Nov. 17, 1959, the coldest reading for this week of the year since 1893. Next is 8° in 1916.
Harrison Lake’s center stands about 720 ft above sea level. Within three miles the land runs from 630 ft to 970 ft, a difference of 340 ft: rolling country. The highest named summit within 15 miles is Weed Patch Hill, about 1,130 ft, 10 miles west.
Under the town center the state geologic map shows Borden Group (siltstone), from the Carboniferous, 324 to 359 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 45×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone. Age: Carboniferous, 324 to 359 million years old. About 23 mi of the line.
Black-shale. Age: Devonian to Carboniferous, 324 to 422 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.
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 Harrison Lake reaches the Gulf of America by way of Denios Creek, the East Fork White, the White River, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,420 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Harrison Lake; river miles along the main stem, rounded.
Harrison Lake has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 22° in January. A normal year brings about 16 inches of snow; with the rain, that comes to about 47 inches of water.
On November 14 Harrison Lake normally reaches 55° and falls to 34°. The record high is 83°, in 1955; the record low 11°, in 1986. The most rain on this date, 1.71 in, fell in 1972.
Normals 1991–2020 and records since 1893 at Columbus, 6 miles east-southeast, 110 ft lower. NOAA, through RCC-ACIS.
