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McKinney Falls State Park


McKinney Falls State Park

McKinney Falls State Park
Lower McKinney Falls
Map showing the location of McKinney Falls State Park
Map showing the location of McKinney Falls State Park
Location Travis County, Texas
Nearest city Austin
Area 744.4 acres (301 ha)
Established 1976
Governing body Texas Parks and Wildlife Department

McKinney Falls State Park is a state park located at the southeastern edge of Austin, Texas, United States around the confluence of Onion and Williamson Creeks and is administered by the Texas Parks and Wildlife Department. The park opened on April 15, 1976 and is named after Thomas F. McKinney, a businessman, race horse breeder and rancher, who owned and lived on the land in the mid-to-late 19th century.


  • Pre-history 1
  • History 2
  • Features 3
    • Flora 3.1
    • Fauna 3.2
    • Historical Sites 3.3
  • Pollution 4
  • See also 5
  • References 6
  • External links 7


During the Cretaceous Period, much of Texas was covered by a shallow sea. The sediments deposited during this period lithified into the limestone rock underneath the park's soil and was exposed by erosion around the creek bed. Aquatic reptiles swam in the sea as evidenced by a complete skeleton of a mosasaur found in the rocks of Onion Creek not far from the park.[1]

A volcano, now long extinct and called "Pilot Knob," spewed debris into the surrounding sea. The streams of soft volcanic debris eroded faster than the hard limestone. The removal of the softer layers and undercutting of the limestone by the water led the falls to be formed over millions of years.

There is evidence that hunter-gatherers occupied the land that is now McKinney Falls State Park at least five thousand years ago, maybe more. The tribes found water in the creek and protection among the rock shelters created by the same undercutting action that created the falls.


Thomas Freeman McKinney, the park's namesake.

The land that the park occupies was originally part of an eleven league (about 49,000 acres (20,000 ha)) grant that Mexican land speculator Santiago del Valle purchased from the government of Mexico. Samuel May Williams acquired ten leagues (about 44,000 acres (18,000 ha)) of the grant from del Valle and sold the land to Michael B. Menard who in turn sold nine leagues (about 40,000 acres (16,000 ha)) to Thomas F. McKinney in 1839.[2] McKinney did not move to his land until 1850 and took two years to build a stone house, barns and a gristmill. The mill was destroyed by a flood in 1869 and the house by a fire in the late 1940s. McKinney lived on the land ranching and raising thoroughbred horses until his death on October 5, 1873.[3] McKinney's wife, Anna, sold small parcels of land to relatives, and in 1885 she sold most of the land to James W. Smith.

In 1971, J.E. "Pete" Smith, the grandson of James Smith, donated 682 acres (276 ha) of the ranch to the State of Texas for a park. The land was appraised at $731,300 and the state received a matching federal grant to develop the park. After archaeological digs and surveys were completed, the park was developed. The park was dedicated on April 14, 1976 by Governor Dolph Briscoe and opened to the public on April 15.

The Texas Legislature also approved funds for the Texas Parks and Wildlife Department to construct new state offices on a bluff on the northern edge of the donated land. The offices are outside the park boundaries and only accessible by a separate road.


The upper falls.

The park includes several designated hiking trails. The namesake features of the park are the scenic upper and lower falls along Onion Creek.


Bald Cypress, sycamores and pecan trees line the banks of Onion Creek and live oak, ashe juniper, and mesquite can be found on the drier uplands. Other trees found in the park include Wafer Ash, Red Oak, Texas Persimmon, chinaberry, Cedar Elm and Mexican Plum. In spring, the roads are lined with wildflowers, dominated by the Texas Bluebonnet. Cacti can also be found such as the Prickly Pear and Pencil Cactus.


White-tailed deer are common throughout the park, as well as raccoons, armadillos, and fox squirrels. Many bird species are found in the park including buntings.

Historical Sites

The park also features the Smith Rock Shelter, a limestone overhang used for shelter by Native Americans for hundreds of years, along with the ruins of McKinney's stone house and his horse trainer's cabin. The Smith Rock Shelter and the McKinney homestead have each been added to the National Register of Historic Places.


The park was a popular spot for swimming from the day it opened. In April 1981, swimming in the park was banned when several elementary school children complained of cramps and nausea after swimming in Onion Creek. Testing indicated the fecal coliform count in the water was 2600 per 100 milliliters of water, well above the 200 count maximum deemed safe for swimming.[4]

The problem was blamed on rain water runoff from the mostly urban area located upstream on Onion and Williamson Creeks. The run off dumped animal waste, oils, dirt and debris into the creeks.[5] Another contributor was the Williamson Creek Wastewater Treatment Plant. The plant would occasionally dump effluent in various stages of treatment into Williamson Creek if there was equipment failure. By 1982, the plant was overloaded by the rapid growth of the city and regularly discharged effluent into the creek, not all of which met state standards for discharge.

Twelve years later in June 1993, the park ban on swimming was finally lifted. This was due to the closure of the Williamson Creek Wastewater Treatment Plant in 1986, Austin's enactment of a comprehensive watershed ordinance and starting a city wide hazardous chemicals collection program.[6] Swimming is still often restricted because of high fecal coliform counts, usually after heavy rains.

See also


  1. ^ Raney, Jay A. Down to Earth at McKinney Falls State Park, Texas. Bureau of Economic Geology. 1997. p3.
  2. ^ Henson, Margaret Swett. McKinney Falls. The Texas State Historical Association, 1999. p 4.
  3. ^ ibid. p 36.
  4. ^ Mangan, Andy. "McKinney Falls thrives despite ban on swimming". Austin American-Statesman. August 15, 1982. p B8.
  5. ^ McCann, Bill. "Creek Pollution Cuts Use of McKinney Falls State Park". Austin American-Statesman. March 17, 1985. p B6.
  6. ^ "A Good Week for Parks". The Austin Chronicle. June 24, 1993.

External links

  • Texas Parks and Wildlife: McKinney Falls State Park
  • Thomas F. McKinney from the Handbook of Texas Online
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