“The Upper Brushy Creek WCID is designed to substantially reduce flooding in the largest damage center in Williamson County,” said Sundt Project Director Kevin Graf. “We look forward to working with Upper Brushy Creek WCID and are confident that our expertise in flood control and dam construction will support the success of this project.”
The new dam will reduce flood risks for over 1,000 residents along the approximately 5 miles of Lake Creek as it winds from the dam through the Greater Round Rock West neighborhood, past the IH 35 frontage roads, and continues to Lake Creek Park. The project will also improve emergency access and response times in the area by reducing flood risk at multiple road crossings.
Sundt is building a 3,800-foot-long earth dam embankment with a maximum height of 40 feet including an underdrain system. The dam will have two outlet features. The principal spillway, located on Lake Creek, will include an ungated concrete intake structure, a concrete-encased steel conduit, and a concrete impact basin. The auxiliary spillway will be a concrete labyrinth weir crest discharging to a chute and stilling basin. The project will also require Sundt to build an earthen cofferdam and excavate 60,000 cubic yards of earth and rock.
