The Rio en Medio 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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74° on Nov. 11, 1999, the hottest reading for this week of the year since 1972. Next is 73° in 2005.
Rio en Medio’s center stands about 7,170 ft above sea level. Within three miles the land runs from 6,440 ft to 9,250 ft, a difference of 2,810 ft: mountain country. The highest named summit within 15 miles is Santa Fe Baldy, about 12,580 ft, 8 miles east.
Under the town center the state geologic map shows Lower Santa Fe Group (conglomerate-sandstone, coarse-detrital, fine-detrital), from the Late Oligocene to Late Miocene, 5.3 to 28 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 3×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate-sandstone, coarse-detrital, fine-detrital. Age: Late Oligocene to Late Miocene, 5.3 to 28 million years old. About 11 mi of the line.
Granitic, gneiss. Age: Paleoproterozoic, 1.6 to 1.7 billion years old. About 6 mi of the line.
Sandstone, limestone, dolostone. Age: Carboniferous to Permian, 252 to 324 million years old. About 2 mi of the line.
Plutonic. Age: Paleoproterozoic to Mesoproterozoic, 1 to 2.5 billion years old. About 2 mi of the line.
Pelitic-schist, muscovite-schist, quartzite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 2 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 0.1 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Rio en Medio reaches the Gulf of America by way of the Pojoaque and the Rio Grande: about 1,640 river miles.
Lakes on the way: Paz Ramirez Lake, Amistad Reservoir, Elephant Butte Reservoir and Caballo Reservoir.
760 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rio en Medio; river miles along the main stem, rounded.
Rio en Medio has a cold semi-arid climate. Summer afternoons average 86° in July; winter nights fall to about 18° in January. A normal year brings about 20 inches of snow; with the rain, that comes to about 13 inches of water.
On November 14 Rio en Medio normally reaches 54° and falls to 25°. The record high is 73°, in 1999; the record low 15°, in 1976. The most rain on this date, 0.70 in, fell in 1997.
Normals 1991–2020 and records since 1972 at Santa Fe 2, 15 miles south-southwest, 410 ft lower. NOAA, through RCC-ACIS.
