The Indian Hills 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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75° on Nov. 16, 2016, the hottest reading for this week of the year since 1961. Next is 74° in 1999.
Indian Hills’s center stands about 6,880 ft above sea level. Within three miles the land runs from 6,030 ft to 8,270 ft, a difference of 2,240 ft: mountain country. The highest named summit within 15 miles is Meridian Hill, about 11,460 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Granitic rocks of 1700-m.y. age group (granite), from the Paleoproterozoic, 1.6 to 2.5 billion years old.
The section below crosses 15 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Alkali-feldspar-granite, granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 7 mi of the line.
Sandstone, mudstone, conglomerate. Age: Late Cretaceous to Paleocene, 56 to 100 million years old. About 4 mi of the line.
Biotite-gneiss, schist, migmatite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 3 mi of the line.
Gneiss. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 2 mi of the line.
Granite, alkali-feldspar-granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 1 mi of the line.
Gravel, unconsolidated. Age: Pleistocene, 0.2 to 1.6 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. 9 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 Indian Hills reaches the Gulf of America by way of Turkey Creek, Bear Creek, the South Platte, the Platte, the Missouri and the Mississippi: about 2,430 river miles.
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 Indian Hills; river miles along the main stem, rounded.
Indian Hills has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 13° in January. A normal year brings about 81 inches of snow; with the rain, that comes to about 19 inches of water.
On November 14 Indian Hills normally reaches 52° and falls to 21°. The record high is 74°, in 1999; the record low −10°, in 2014. The most rain on this date, 1.35 in, fell in 1987.
Normals 1991–2020 and records since 1961 at Evergreen, 4 miles west-northwest, 120 ft higher. NOAA, through RCC-ACIS.
