Ciénega Creek (English: "Hundred Springs Creek" or "Marsh Creek") is an intermittent stream located in the Basin and Range region of southern Arizona, and is one of the most intact riparian corridors left in the state. It originates in the Canelo Hills and continues northwest about 50 miles (80 km) to an area just outside Tucson, where it becomes known as Pantano Wash. Pantano Wash continues through Tucson and eventually connects with the Rillito River.
A murky section of the creek.
Location of the mouth of Ciénega Creek in Arizona
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From its origin in the Canelo Hills of Santa Cruz County at , Ciénega Creek flows northwesterly through the upper Ciénega basin, a wide alluvial valley separating the northern Santa Rita and Empire Mountains to the west and the Whetstone Mountains to the east. A bedrock high, called "the Narrows," serves as a hydrologic barrier dividing the upper and lower basins, and is characterized by riparian vegetation and perennial flow.
Ciénega Creek continues northward through the lower alluvial basin until it bends west/northwest in the vicinity of Anderson and Wakefield Canyons. After crossing Interstate 10 near the town of Vail, Ciénega Creek again crosses a bedrock high, and once more the flow becomes perennial. In these stretches, groundwater is forced upward through faults in the bedrock from aquifers near the surface. Just north of Vail, Ciénega Creek becomes known as Pantano Wash, which continues northwest through Tucson and links up with the Rillito River.
Ciénega Creek is located within the transitional zone between the Sonoran and Chihuahuan Deserts, and exhibits some features of each region. The creek supports "outstanding examples" of cottonwood-willow gallery forest and mesquite bosque, which are home to many bird species that have become rare due to the loss of riparian habitats. Some of the birds that live along the creek are the Southwestern willow flycatcher, Yellow-billed cuckoo, and Bell's vireo.
Important lowland populations of riparian and xeroriparian amphibians and reptiles are also known to live along the creek. Included in this group are several toads, the checkered garter snake, the Madrean alligator lizard, and the giant spotted whiptail lizard. The Mexican garter snake, which has declined throughout its range in the United States, retains a strong population in Ciénega Creek.
The federally endangered Chiricahua leopard frog occurs only in the upper reaches of the creek. The lowland leopard frog and the Sonoran mud turtle inhabit the stream throughout, rounding a full complement of aquatic, native vertebrate species originally inhabiting the ciénegas of southern Arizona. An unstudied molluscan fauna also lives in the stream.
Ciénega Creek is one of the few remaining streams in southern Arizona that has not been invaded by non-native fish. Las Cienegas National Conservation Area supports the largest natural population of the federally endangered Gila topminnow in the United States, as well as a healthy population of endangered Gila chub and the longfin dace.
Las Cienegas National Conservation Area was established in 2000 to protect the upper Ciénega basin. Its headquarters is the historic Empire Ranch, which is located about 45 miles (72 km) southeast of Tucson, near the town of Sonoita. Spanning 45,000 acres (18,000 ha), Las Cienegas includes large areas of grassland and woodland, in addition to Ciénega Creek and the riparian corridor. Empire Ranch, which dates back to the 1870s, is also open to the public, and has been listed on the National Historic Register since 1976.
The Ciénega Creek Natural Preserve was founded in 1986 and is about 20 miles (32 km) north of Empire Ranch, in the lower Ciénega basin. With 4,000 acres (1,600 ha) in total, the Ciénega Creek Natural Preserve protects over 12 miles (19 km) of the creek, about half of which has perennial flow. There are also a few historic sites located in the preserve, including the ghost town of Pantano and the Ciénega Bridge, which was built between 1920 and 1921.
In Tucson, much of the Pantano Wash is now part of the Pantano River Park, which includes a paved walkway alongside the wash, as well as restrooms, water fountains, and picnic tables. The Pantano River Park is also home to a Commemorative Tree Park, which will help restore about two miles of riverbank, control floods, erosion and stormwater runoff reduction, carbon sequestration, urban heat, and provide shade. Since 2012, over 100 desert-adapted commemorative trees have been planted along the eastern banks of Pantano Wash. Hundreds more will be added over the following years, until the goal of 570 trees is reached.
Agua Sal Creek is a stream located in the Chinle Valley of Apache County, Arizona.
"Agua Sal" is a name derived from Spanish meaning "salt water". The name was collected by the United States Geological Survey between 1976 and 1980, and entered into the Geographic Names Information System on February 8, 1980.Ash Creek (Arizona)
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Bis Ii Ah Wash is a stream located in Apache County, Arizona, southwest of the census-designated place of Nazlini. The name was collected by the United States Geological Survey between 1976 and 1980, and entered into the Geographic Names Information System on February 8, 1980.Black Draw
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The Blue River is a 50.8-mile-long (81.8 km) stream that runs through the Apache-Sitgreaves National Forest in Arizona. It arises near Alpine and flows south into the San Francisco River just upstream from Clifton. The Blue River varies in altitude from 6,400 to 4,000 feet (2,000 to 1,200 m).Bouse Wash
Bouse Wash is one of the larger eastern-bank dry washes that enter the Colorado River in the Lower Colorado River Valley. It is located in La Paz County, extreme western Arizona.Canyon Creek (Salt River tributary)
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Pantano (English: "Marsh") is a populated place located in eastern Pima County, Arizona, near the town of Vail. It was originally a mail and stagecoach stop named Ciénega Station, after the nearby Ciénega Creek, and later grew into a small railroad town with the arrival of the Southern Pacific in 1880.Workman Creek
Workman Creek is a watercourse in the Salome Wilderness in central Arizona, United States.
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