The Willcox Playa is a large

endorheic An endorheic basin (; also spelled endoreic basin or endorreic basin) is a drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but drainage converges instead into lakes ...

dry lake or

sink A sink is a bowl-shaped plumbing fixture for washing hands, dishwashing, and other purposes. Sinks have a tap (faucet) that supply hot and cold water and may include a spray feature to be used for faster rinsing. They also include a drain t ...

(playa) adjacent to

Willcox, Arizona Willcox is a city in Cochise County, Arizona, United States. The city is located in the Sulphur Springs Valley, a flat and sparsely populated drainage basin dotted with seasonal lakes. The city is surrounded by Arizona's most prominent mountain ...

Cochise County Cochise County () is a county in the southeastern corner of the U.S. state of Arizona. It is named after the Native American chief Cochise. The population was 125,447 at the 2020 census. The county seat is Bisbee and the most populous city is ...

, in the southeast corner of the state. It is part of the

Sonoran Desert The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona ...

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...

and is the remnant of a

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

era

pluvial In geology and climatology, a pluvial is either a modern climate characterized by relatively high precipitation or an interval of time of variable length, decades to thousands of years, during which a climate is characterized by relatively high ...

Lake Cochise. Portions of the dry lake bed have been used as a bombing range by the US military. Most of this area is currently used by the Electronic Proving Ground, based at

Fort Huachuca Fort Huachuca is a United States Army installation, established on 3 March 1877 as Camp Huachuca. The garrison is now under the command of the United States Army Installation Management Command. It is in Cochise County in southeast Arizona, appr ...

. It was designated a

National Natural Landmark The National Natural Landmarks (NNL) Program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only national natural areas program that identifies and recognizes the best ...

in 1966 for its fossil pollen captured underground, the thousands of

sandhill cranes The sandhill crane (''Antigone canadensis'') is a species of large crane of North America and extreme northeastern Siberia. The common name of this bird refers to habitat like that at the Platte River, on the edge of Nebraska's Sandhills on t ...

that roost in the area and the largest diversity of

tiger beetle Tiger beetles are a family of beetles, Cicindelidae, known for their aggressive predatory habits and running speed. The fastest known species of tiger beetle, ''Rivacindela hudsoni'', can run at a speed of , or about 125 body lengths per second. ...

s in the United States. The playa itself is roughly 8 miles wide by 10 miles long, with an area of approximately 40 square miles.

Location

The Willcox Playa is located in the northern region of Sulphur Springs Valley; drainage to the playa from the east is from the connected Dos Cabezas–

Chiricahua Mountains The Chiricahua Mountains massif is a large mountain range in southeastern Arizona which is part of the Basin and Range province of the west and southwestern United States and northwest Mexico; the range is part of the Coronado National Forest. ...

; drainage from the southwest is from the

Dragoon Mountains The Dragoon Mountains are a range of mountains located in Cochise County, Arizona. The range is about 25 mi (40 km) long, running on an axis extending south-south east through Willcox. The name originates from the 3rd U.S. Cavalry Drag ...

, and the Little Dragoon Mountains. During the summer, intense solar heating sometimes gives rise to large

dust devils A dust devil is a strong, well-formed, and relatively short-lived whirlwind. Its size ranges from small (half a metre wide and a few metres tall) to large (more than 10 m wide and more than 1 km tall). The primary vertical motion is u ...

, and strong winds from thunderstorms and winter storms can produce

dust storms A dust storm, also called a sandstorm, is a meteorological phenomenon common in arid and semi-arid regions. Dust storms arise when a gust front or other strong wind blows loose sand and dirt from a dry surface. Fine particles are transporte ...

rising from the dry lake that can hinder traffic on the

Interstate 10 Interstate 10 (I-10) is the southernmost cross-country highway in the American Interstate Highway System. I-10 is the fourth-longest Interstate in the United States at , following I-90, I-80, and I-40. This freeway is part of the originally pl ...

highway.

Willcox Playa Wildlife Area

In the vicinity of the dry lake is the Willcox Playa Wildlife Area administered by the

Arizona Game and Fish Department The Arizona Game and Fish Department is a state agency of Arizona, headquartered in Phoenix. The agency is tasked with conserving, enhancing, and restoring Arizona's diverse wildlife resources and habitats through protection and management progra ...

. The location boasts rich wildlife, and hosts the annual January birding festival "Wings Over Willcox".

References

External links

Willcox Playa
Arizona Game and Fish Department

{{authority control Wildlife areas of Arizona Protected areas of the Sonoran Desert Landforms of Cochise County, Arizona Endorheic basins of the United States Protected areas of Cochise County, Arizona National Natural Landmarks in Arizona