San Bernardino River
The Rio San Bernardino, or San Bernardino River, begins in extreme southeastern Cochise County, Arizona, and is a tributary of the Bavispe River, in Sonora, Mexico.[1]
Watershed
The Rio San Bernardino has two major tributaries, the Rio de Agua Prieta and the Arroyo Cajón Bonito. The river's headwaters are in extreme southeastern Cochise County, Arizona as Black Draw. From here the Rio San Bernardino flows south, crossing into Mexico east of Douglas, Arizona. In northern Sonora, the Cajón Bonito River joins the San Bernardino River in the San Bernardino Valley after draining the Sierra San Luis and northern end of the Sierra Madre Occidental.[2] Next the Rio San Bernardino is joined by the Agua Prieta River which also begins in Cochise County, crossing south as Whitewater Draw into Mexico at Douglas and Agua Prieta. The Agua Prieta River flows south and east to join the Rio San Bernardino, shortly after the Rio Agua Prieta has its confluence with the Rio Fronteras, the latter flowing north from near Nacozari de Garcia, Sonora. The San Bernardino River joins the Bavispe River at Morelos, Sonora at the northern end of the Sierra del Tigre. The Bavispe River flows south by southwest to the Yaqui River and eventually to the Gulf of California at Ciudad Obregon, Sonora.[1]
Ecology
North American beaver (Castor canadensis) were documented by Leopold in 1977 in northern Mexico, and a 2000 survey found five breeding pairs of beavers on the Cajón Bonito River mostly in remote ranches without livestock. The authors of the latter study reported that local ranchers kill beavers because they fear felled trees will block roads. However, beavers are considered keystone species and ecosystem engineers, as their dams raise the water table and turn seasonal stretches of streams into perennial reaches, producing highly beneficial impacts on species abundance and diversity in the riparian zone.[3] Beavers were also documented by Hendrickson et al. in 1978 on the Cajón Bonito.[4]
See also
References
- ^ a b Leonard F. DeBano, ed. (1999). Biodiversity and the Management of the Madrean Archipelago: The Sky Islands of Southwestern United States and Northwestern Mexico. DIANE Publishing. p. 375. ISBN 978-0-7881-8386-7. Retrieved 2011-11-24.
- ^ "Rio Bavispe". Wild Sonora. Retrieved 2011-11-24.
- ^ Karla Pelz Serrano; Eduardo Ponce Guevara; Carlos A. López González (2005). "Habitat and Conservation Status of the Beaver in the Sierra San Luis Sonora, México" (PDF). USDA Forest Service Proceedings RMRS-P-36: 429–433. Retrieved 2011-11-25.
- ^ Dean A. Hendrickson; W. L. Minckley; Robert R. Miller; Darrel J. Siebart; Patricia Haddock Minckley (1980). "Fishes of the Río Yaqui Basin, México and United States". Journal of the Arizona-Nevada Academy of Science. 15 (3): 94. JSTOR 40025038.
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- Agua Sal Creek
- Black Creek
- Black River
- Blue River
- Chinle Creek
- Chinle Wash
- Kinlichee Creek
- Laguña Creek
- Little Colorado River
- Puerco River
- San Francisco River
- Walker Creek
- Zuni River
- Babocomari River
- Black Draw
- Bonita Creek
- Dragoon Wash
- Mescal Arroyo
- San Bernardino River
- San Pedro River
- San Simon River
- Steins Creek
- Tres Alamos Wash
- Whitewater Draw
- Canyon Creek
- Canyon Creek
- Cherry Creek
- Christopher Creek
- East Verde River
- Fossil Creek
- Gila River
- Haigler Creek
- Horton Creek
- Negro Wash
- Salome Creek
- Salt River
- Tonto Creek
- White River
- Workman Creek
- Aravaipa Creek
- Ash Creek
- Black River
- Gila River
- San Pedro River
- San Simon River
- Black River
- Blue River
- Eagle Creek
- San Francisco River
- Bouse Wash
- Colorado River
- Santa Maria River
- Tyson Wash
- Agua Fria River
- Centennial Wash
- Gila River
- Hassayampa River
- Salt River
- Verde River
- Beaver Dam Wash
- Big Sandy River
- Bill Williams River
- Centennial Wash
- Colorado River
- Diamond Creek
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- Santa Maria River
- Virgin River
- Black River
- Chevelon Creek
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- Clear Creek
- Laguña Creek
- Little Colorado River
- Little Lithodendron Wash
- Puerco River
- Silver Creek
- White River
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- Brawley Wash
- Ciénega Creek
- Mescal Arroyo
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- Rillito River
- Sabino Creek
- San Cristobal Wash
- San Pedro River
- Santa Cruz River
- Tenmile Wash
- Gila River
- San Pedro River
- Santa Cruz River
- Tom Mix Wash
- Babocomari River
- Ciénega Creek
- Harshaw Creek
- Santa Cruz River
- Sonoita Creek
- Agua Fria River
- Fossil Creek
- Granite Creek
- Hassayampa River
- Verde River