Page 516 - FY 2025 Adopted Operating Budget and Business Plan

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Public Safety

Goal 2: Mitigate Flood Risks and Protect Stormwater Infrastructure
Objective 1: Plan and Implement Stormwater Projects
Project Performance Measure(s) Department(s)
Core Airport South Drainage Operating Cost Recovery Transportation
PS Improvements
2.1.2
Summary:

The Airport, in conjunction with TxDOT Aviation and City of Arlington Public Works, completed a drainage study in FY
2022. The existing storm drain infrastructure has deficiencies in capacity on the south end of the airport. Model results
indicate ponding to the south of the airfield during all storm events, with runoff overtopping Green Oaks Boulevard
during the 25-year and 100-year storm events. Flooding in this region can be attributed to undersized pipes that convey
runoff below the vehicle service roads, as well as the volume of the runoff directed to this outfall location. New,
increased drainage infrastructure is needed to control stormwater and prevent future flooding from continuing to cause
issues.

Update:
Drainage improvements are at 60% design and have been submitted to Planning and Development Services for review.
The design had to be changed due to an increase of planned developed land pertaining to this drainage improvement.
Airport stormwater was no longer able to be directly discharged into Fish Creek and 48-hour detention pond will now be
constructed to delay the flow of water into Fish Creek.

Airport South Drainage Improvements

Consultant Selection for design

Design and Bid phase

Reimbursable Grant Exection

Drainage Improvements

Final Inspection

02/23 11/23 01/24 07/24 10/24 12/24

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