Local officials celebrated the completion of the newly completed biofiltration pond downtown, a milestone in the second phase of Waterloo Greenway’s comprehensive plan to revitalize Waller Creek on Oct. 24.

The pond will filter stormwater and improve water quality in Waller Creek.

“The next time it rains ... the biofiltration pond will clean the stormwater from 26.2 acres of downtown streets before it enters Waller Creek,” Waterloo Greenway CEO Colette Pierce Burnette said Oct. 24. “The pond will not only clean and filter the water, but it also prevents debris from entering our waterway.”
Waterloo Greenway CEO Colette Pierce Burnette celebrated the completion of the biofiltration pond downtown on Oct. 24. She was joined by city officials, the U.S. Army Corps of Engineers and U.S. Rep. Lloyd Doggett. (Courtesy Waterloo Greenway)
Waterloo Greenway CEO Colette Pierce Burnette celebrated the completion of the biofiltration pond downtown Oct. 24. She was joined by city officials, the U.S. Army Corps of Engineers and U.S. Rep. Lloyd Doggett. (Courtesy Waterloo Greenway)
How it works

Sedimentation biofiltration ponds manage stormwater by using plants and other natural elements to filter pollutants from runoff before it enters waterways, according to a news release.

Austin’s biofiltration pond will treat 26.2 acres of urban stormwater along Waller Creek and downtown, according to the release.
The biofiltration pond (not pictured) will filter stormwater and improve water quality in Waller Creek (pictured) (Haley McLeod/Community Impact)
The biofiltration pond (not pictured) will filter stormwater and improve water quality in Waller Creek (pictured). (Haley McLeod/Community Impact)
The background


The biofiltration pond’s completion is part of the second phase of an overall plan to create a 1.5-mile greenway stretching from Waterloo Park to Lady Bird Lake, according to Waterloo Greenway.

The second phase of the plan, The Confluence, is located at the southernmost point of Waterloo Greenway. This project includes improving ecological health of the area, restoring the creek, building nearly a mile of trails, and planting over 200,000 native plants and 1,500 trees, Burnette said.
Mayor Kirk Watson and the U.S. Army Corps of Engineers celebrated the opening of the biofiltration pond on Oct. 24. The U.S. Army Corps of Engineers dedicated $11 million to the restoration of Waller Creek, according to a news release. (Courtesy Waterloo Greenway)
Mayor Kirk Watson and the U.S. Army Corps of Engineers celebrated the opening of the biofiltration pond Oct. 24. The U.S. Army Corps of Engineers dedicated $11 million to the restoration of Waller Creek, according to a news release. (Courtesy Waterloo Greenway)
Going forward

The opening of The Confluence is anticipated in May 2026, Burnette said.

Waterloo Park and Moody Amphitheater’s opening in 2021 marked the first phase of Waterloo Greenway.