In addition to the Devils River and Rio Salado, it has been found upstream in the
Pecos River to Ward County in Texas (Singley 1893) and several locations in New Mexico (Cockerell 1902; Metcalf 1982; Lang 2000); upstream in the Rio Grande to sites just downstream of Big Bend, Brewster County, Texas (Howells 1994) as well as several Mexican tributaries of the lower Rio Grande (Johnson 1999).
Department of Transportation's Office of Pipeline Safety (OPS) issued a Corrective Action Order to El Paso calling for all segments of the three pipelines in the vicinity of
Pecos River to remain closed until it can be determined that the pipeline segments are safe to operate.
Notropis simus pecosensis is listed as threatened by federal and state governments and is endemic to the
Pecos River of New Mexico and Texas (Hoagstrom et al., 2008a).
lupus collected from two streams in west Texas: Independence Creek (
Pecos River drainage, Terrell County) and Dolan Creek (Devils River drainage, Val Verde County).
The shallow
Pecos River makes a wide swath across the landscape.
Four additional, undescribed species of Dionda have been reported (Schnohuth et al., 2012): two from Mexico (Dionda species 1 from the Conchos and Nazas river drainages, and Dionda species 2 from Ojo de Agua de San Juan in the Mezquital River drainage and from El Vergel Spring, also in the Mezquital drainage), and two from the USA (Dionda species 3 from the San Saba and Concho rivers in the northern Colorado River drainage, and Dionda species 4 from the upper
Pecos River drainage in New Mexico).
Preliminary analysis of the effects of the
Pecos River on geographic distribution of small mammals in western Texas.
The corrective action issued to El Paso by the OPS after the August 20 accident directed the company to perform hydrostatic tests and perform both x-ray and ultrasonic examinations of the pipeline in the vicinity of the
Pecos River where the accident occurred.
Rocky terrain in the
Pecos River Valley and Delaware Mountains proved to be a major obstacle, requiring crews to rely on rock saws and hydraulic hammer hoes.
(2010) detected only two haplotypes of the headwater catfish, one in the Pecos drainage and one in the Rio Grande drainage below the
Pecos River. Yates et al.
An introduced, non-native population of Arkansas River shiners in the
Pecos River, New Mexico, is not protected under this decision.
Dionda episcopa is believed to occur over a broader range that includes the upper and lower portions of the
Pecos River in Texas and New Mexico, as well as the Big Bend region of the Rio Grande (Sublette et al., 1990; Scharpf, 2005).
The Permian Basin is composed of five Texas counties (Crane, Ector, Loving, Ward and Winkler) located east of the
Pecos River. This area is an ecotonal zone at the junction of three major ecogeographic regions of Texas: the Edwards Plateau, the Llano Estacado and the Trans-Pecos (Blair 1950).
In New Mexico, the Pecos sunflower occurs near the town of Grants, along the lower Rio San Jose, around the town of Santo Rosa, and near the
Pecos River from just north of Roswell to near Dexter.
