Know Your Flood Zone Status
The first, most useful step any Austin homeowner can take is checking whether their specific property sits within a mapped flood zone through the City of Austin's floodplain resources. Many homeowners assume their property is not at risk simply because it has never flooded, but maps are updated periodically as development and drainage patterns change.
Knowing your specific status shapes every other decision, from whether to carry flood insurance to how seriously to treat a flash flood warning.
Year-Round Preparation Steps
Beyond storm-specific prep, a few habits reduce risk year-round: keeping gutters and downspouts clear so water is directed away from your foundation, checking that your yard's grading slopes away from the house rather than toward it, and knowing where your home's main water shutoff valve is, which matters for any water emergency, not just flooding.
These are the kind of low-effort, high-value tasks that are easy to put off but genuinely reduce your risk when a storm does arrive.
What to Do When a Flash Flood Warning Is Issued
Once a warning is active for your area, move vehicles to higher ground if you are in a flood-prone location, bring in or secure outdoor items that could become hazards in flowing water, and move valuables and important documents to an upper floor or waterproof storage if your property has flooded before or sits in a mapped risk zone.
Never attempt to drive or walk through flowing flood water, even water that looks shallow can carry more force and hidden hazards than expected.
What to Do the Moment Water Enters Your Home
Once it is safe to assess, avoid wading through standing water if you cannot confirm it is free of electrical hazards. Storm water should always be treated as contaminated, since it typically carries dirt, debris, and runoff contaminants picked up on its way into your home.
Call for professional extraction and cleanup as soon as it is safe to do so. The faster contaminated water is removed and the area sanitized, the less risk to both your health and your home's structure.