Why zone maps don't tell the whole story
Central Texas sits inside what meteorologists call “Flash Flood Alley,” a corridor where fast-moving storms can drop several inches of rain in a short window and overwhelm creeks and low-lying land that a flood map rates as moderate or low risk. Maps are also redrawn infrequently, so new development — rooftops and pavement replacing pasture and ranchland — can outpace how current a given map actually is for a fast-growing area.
None of that means every property needs flood coverage. It does mean “I'm not in the mapped zone” answers a different question than “can my property flood.”
What a policy actually costs and covers
Flood premiums in lower-risk areas commonly run in the range of a few hundred dollars a year, well under the cost of even a modest flood claim. Typical NFIP coverage runs up to $250,000 for the dwelling and up to $100,000 for personal belongings, and belongings coverage has to be purchased separately from the dwelling coverage.
One timing detail catches people off guard: most flood policies carry roughly a 30-day waiting period before coverage takes effect, so it isn't something to shop for once a storm is already forecast — by then it's typically too late for that specific event.
What standard homeowners insurance covers instead
A standard homeowners or farm & ranch policy handles wind, hail, fire, and plenty of water damage that starts inside the home (a burst pipe, for instance), but it excludes flooding — water that rises from outside, like an overflowing creek or standing rainwater. That's true everywhere in Texas, not just in mapped flood zones, which is exactly why the separate policy exists.