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Stormwater Detention

Austin, TX · City rule · Reviewed 2026-09-28

Development may need on-site stormwater detention unless it qualifies for another approved compliance path and demonstrates that it will not cause adverse flooding impacts.

Official source: Regional Stormwater Management ProgramSource checked 2026-09-28

More about this rule

The rule in plain language

Austin's Regional Stormwater Management Program is a technical alternative, not an automatic fee or waiver. Eligibility depends on engineering analysis and City approval within the affected drainage system.

Common follow-up questions

What should I do first?

Have a civil engineer evaluate existing and proposed runoff, the drainage area, receiving system, and applicable watershed criteria early in site design.

What can change the answer?

Added impervious cover, drainage path, watershed, downstream capacity, floodplain conditions, and proposed mitigation affect the requirement.

What to keep in mind

A small site or nearby public drainage system does not automatically remove detention duties. The analysis must consider downstream and sometimes upstream impacts.

Official source

Regional Stormwater Management Program

City rule: City of Austin · retrieved-2026-09-26 · Source checked 2026-09-28 · Reviewed 2026-09-28

Civic education, not legal advice. Rules can change.

Comments

The reviewed answer ends above. This is resident discussion and resident-created ideas, not legal guidance. Comments require moderation before publication. Names and neighborhoods are self-reported; identity and residency are not verified.

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