The Warren Street Flood Risk Reduction project will improve the drainage system in the area along Exposition Blvd., Warren St., Carlton Road, Mount Laurel Lane and Hillview Road in the Tarrytown neighborhood.


July 2023: Input received after the September 2022 public meeting and the addition of Austin Water as a partner to the project has resulted in an extension of the Preliminary Engineering Phase, called Pre-Design. The design team needs to gather additional information and perform further analysis before the project can move into design. Austin Water is also looking into potentially upgrading some water and wastewater lines in the area. Starting Monday, July 17, 2023, our consultant, Doucet Engineers, and their subcontractors start preliminary survey work related to this project. Survey work will begin within the public right-of-way. Doucet Engineers will also need access to specific properties during this time. Letters were sent to those specific properties asking permission to enter the property to collect additional information needed for drainage calculations and potential water and wastewater improvements.

In addition, there has been a change in staff involved with the project. Please note the new project manager and project sponsor below. Their contact information is listed should you have questions regarding the project.


Watershed Protection Department has received several local flooding complaints from residents in this area. Local flooding is the type of flooding that generally occurs away from the creek. It occurs due to an undersized or lack of local drainage system The project is intended to alleviate the flooding of buildings, yards, and streets through upgraded and/or new storm drain infrastructure. 

Project Map

The illustration below shows the proposed alignment for the storm drain infrastructure improvements.

Map showing project area


Our capital improvement projects take many years from start to finish. The process typically includes the following phases:

  • Feasibility Study: When several potential solutions are evaluated.
  • Preliminary Engineering: When a solution is identified and costs are estimated.
  • Design: When the details are worked out, construction plans drawn up and drainage easements are acquired.
  • Permitting and Bidding: When all permits are acquired and a contractor is hired.
  • Construction: When the project is built.
  • Post Construction: Projects typically include a year-long warranty period.

The preliminary engineering phase has been extended and is expected to be complete in Summer 2024.

Related Links and Documents

Contact Information