The Onion Creek Flood Study has two main goals: to update the floodplain maps for Onion Creek and to evaluate options to reduce flooding in the Onion Creek Neighborhood.
Floodplain Maps – Appeal and Comments
There is a 90-day public appeal and comment period for the preliminary floodplain maps for Onion, Bear, Little Bear and Rinard Creeks and some other tributaries. Comments are intended to correct small issues such as mislabeled streets on the maps. Appeals must be about the preliminary floodplain maps and based on engineering analysis.
To view pdfs of the preliminary maps or for more information about how to make an appeal or comment, visit our Appeal and Comment web page. There is also an interactive map farther down this page that has general information about where the floodplain has changed.
Onion Creek is Austin’s largest watershed. In fact, most of the watershed is outside of Austin in Hays County. The floodplain study focuses on the part of Onion Creek within Austin and Travis County. It also looks at three of the creeks that feed Onion Creek: Bear, Little Bear and Rinard.
For the recommended buyouts, the next step is for the Austin City Council to approve using the funds. We are in the process of scheduling this item for a City Council meeting.
Buyouts Recommended in the Onion Creek Neighborhood
The feasibility study about reducing the risk of flooding near Pinehurst Drive and Wild Dunes Drive has been completed. Buyouts have been recommended. We mailed information to homeowners included in the buyout area on November 8, 2017. Please note that participation in the buyout is optional. Please see the map below.