Main Image

Markets: Infrastructure

Davenport Ranch Water Line Improvements

  • Early example of horizontal directional drilling of this magnitude in Central Texas
  • 24-inch waterline under the Colorado River adjacent to the Pennybacker Bridge
  • Gray Engineering provided MUD planning and design engineering services

This project consisted of the extension of a 24-inch waterline northward along the Capital of Texas Highway (Loop 360) from RM 2222 to the Davenport Ranch development. The project included the horizontal directional drilling (HDD) of the 24-inch waterline under the Colorado River in Lake Austin adjacent to the Pennybacker Bridge for the Capital of Texas Highway over Lake Austin.

The project was originally designed for Davenport Ranch Municipal Utility District but was carried out by Gray Engineering for the City of Austin in order to relieve dependency upon the Davenport Ranch development on its own independent water supply system when the city annexed it. The project was one of the early examples of horizontal directional drilling of this order of magnitude in the Central Texas Area.


Block House Creek Ground Storage & Booster Pump Improvements

  • Multi-stage, 1,600 gallons per minute pump station
  • 500,000-gallon ground storage tank as well as a 30,000-gallon hydro pneumatic tank
  • Gray Engineering provided civil design and construction administration services.

The ground storage and booster pump improvements provide a reliable potable water supply system for approximately 2,000 residential connections within the Block House Creek Development in southern Williamson County.

The design included a multi-stage, 1,600-gallon per minute pump station, a 500,000-gallon ground storage tank as well as a 30,000-gallon hydro pneumatic tank. Concerns regarding the location of the site within the primary parkland for the development were addressed by selecting design elements including equipment structures with native limestone rock exteriors.


Cottonwood Creek Regional Water Quality and Detention Pond

  • Regional facility serving 261 acres of mixed-use development
  • Joint venture project funded by 12 private entities and the City of Cedar Park

The Cottonwood Creek regional water quality and detention pond improvement was unique in that it provided regional water quality and stromwater detention needs for approximately 261 acres in the upstream Cottonwood creek watershed located in Williamson County.

The project was a joint venture funded by private development entities along with the City of Cedar Park, which all continue to collaborate on maintenance since its completion in 2008.

Features of the facility include the use of wet pond water quality best management practice and hike and bike facilities that are open to the community.

This project exemplifies what can be achieved through cooperation between landowners and municipalities when it comes to addressing storm water detention and water quality issues over the North Edwards Aquifer on a regional basis.