The park went through the master planning process which was completed in July 2015.

Click on the MAP to see a larger image
Phase 1 Master Plan Implementation
The phase 1 development of Onion Creek Metropolitan Park will consist of approximately 30 acres of irrigated area including open play fields, a 50-space parking lot, trails, and a perimeter sidewalk. An additional 20 acres has been improved for accessibility and ecological restoration through selective clearing. Due to unanticipated issues with the contractor, the project has been delayed. The current schedule anticipates the project to be complete mid-December 2019. For more information, read the updates sent on May 24, 2019 and July 24, 2019.
Onion Creek Metropolitan Park Master Plan
Onion Creek Metropolitan Park Master Plan Report
Download Report , Published on July 17, 2015
Fact Sheet
Master Plan Public Engagement
The Austin Parks Foundation, in collaboration with the City of Austin Parks and Recreation Department, held a series of four community workshops to define a vision for the Onion Creek Metropolitan Park. The entire Austin community was asked to help identify a vision for the types of activities and improvements for the Onion Creek Metro Park and Greenbelt Corridor to be included in the Master Plan for the park.
First Community Workshop
Monday, March 17, 6-8 p.m.
Mendez Middle School
Meeting Materials:
Second Community Workshop
Thursday, September 11, 2014, 6-8 p.m.
Blazier Elementary School
Meeting Materials:
Third Community Workshop
Thursday, December 4, 2014, 6-8 p.m.
Blazier Elementary School
Meeting Materials:
Final Draft Vision Plan
Thursday, March 12, 2015, 6:30pm - 8:30pm
Widen Elementary School
Meeting Flyer
Consent Agreement
Download Proposed Consent Agreement Presentation