The Echo 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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73° on Nov. 12, 1967, the hottest reading for this week of the year since 1940. Next is 73° in 1999.
Echo’s center stands about 5,730 ft above sea level. Within three miles the land runs from 5,370 ft to 7,090 ft, a difference of 1,720 ft: steep hill country. The highest named summit within 15 miles is Lewis Peak, about 9,280 ft, 9 miles south-southwest.
Under the town center the state geologic map shows Echo Canyon Conglomerate and Henefer Formation (conglomerate, sandstone-mudstone), from the Late Cretaceous, 84 to 90 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone, conglomerate. Age: Late Paleocene to Early Eocene, 48 to 59 million years old. About 17 mi of the line.
Conglomerate, sandstone-mudstone. Age: Late Cretaceous, 84 to 90 million years old. About 4 mi of the line.
Sandstone, mudstone. Age: Late Cretaceous to Late Paleocene, 56 to 100 million years old. About 2 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 0.6 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 Echo reaches Great Salt Lake by way of the Weber: about 70 river miles. Great Salt Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Echo; river miles along the main stem, rounded.
Echo has a warm-summer humid continental climate. Summer afternoons average 89° in July; winter nights fall to about 12° in January. A normal year brings about 72 inches of snow; with the rain, that comes to about 15 inches of water.
On November 14 Echo normally reaches 49° and falls to 23°. The record high is 70°, in 1967; the record low 6°, in 1959. The most rain on this date, 1.11 in, fell in 2006.
Normals 1991–2020 and records since 1940 at Echo Dam, here, 260 ft lower. NOAA, through RCC-ACIS.
