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The City of Austin Watershed Protection Department has identified the Tannehill Branch Creek Watershed as a priority for water quality improvements such as removal of pollution, improving stream flow and creating a natural habitat along the creek.

Tannehill Branch Creek experiences a number of water quality issues. These range from high nutrient levels in the water to a lack of plant and wildlife habitat near creek banks, contributing to problems like erosion and unwanted algae growth.  

Project Overview

The project aims to address water quality issues and to enhance the riparian health of the creek. This project will focus on two specific areas: Bartholomew Park and Morris Williams Golf Course. Both of these locations currently have existing stormwater control facilities, and the plans call for the following retrofits and improvements: 

  • Modify the existing flood detention pond at Bartholomew Park to include a permanent wet pond
  • Improve the existing wet pond and construct a second wet pond at Morris Williams Golf Course
  • Create a constructed wetland at Morris Williams Golf Course
  • Enhance natural habitat along Tannehill Branch Creek
  • Support existing recreational uses within parkland along Tannehill Branch Creek

Project Objectives

  • Remove nutrients and improve wildlife habitat near creeks
  • Increase amount of rain water soaking into the ground (infiltration)
  • Increase the amount of normal flow through the creek (baseflow)
  • Facilities/Recreational Upgrades consistent with PARD Vision Plan for Bartholomew Park
  • Stream channel stabilization (Morris Williams) 

Timeline

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

  • Preliminary Engineering – when a solution is identified and costs are estimated.
  • Design – when the details are worked out and construction plans drawn up.
  • Bidding and Permitting – when a contractor is hired and all permits are acquired.
  • Construction – when the project is built.

Preliminary phase was completed in 2022, design is estimated to be completed in 2025 and construction is estimated to begin in 2026.

Project Contacts

Project Manager

Minda Sarmiento, P.E., Public Works Department, (512) 974-5645

Project Sponsors

Lee Sherman, P.E., Watershed Protection Department, (512) 974-6555

Clayton West, Watershed Protection Department, (512) 974-9792

January 18, 2023 Community Meeting

 

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