McKinney corridors to watch
AE-heavy corridors:
- ✓Wilson Creek: north-south through central McKinney. Affects historic downtown, parts of Eldorado, and Stonebridge Ranch tributaries.
- ✓East Fork Trinity River: McKinney's eastern boundary. Floodway designation - more restrictive than AE.
- ✓Honey Creek: northeast McKinney, narrow but elevated risk.
Floodway vs AE - why it matters
Floodway is more restrictive than AE because it is the high-velocity channel during a flood event. New construction inside a floodway requires no-rise certification. If a McKinney listing is in or partially in a floodway, your build options are limited.
McKinney NFIP cost reality
AE policies on a $400K McKinney home typically run $1,800-$3,200/year depending on first-floor elevation. Floodway-adjacent parcels run higher. Newly-mapped parcels (2018+) may qualify for Newly Mapped discount if you bought before the map change.
Full Guide Contents
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Full guide includes: McKinney historic flood claim density by ZIP, the LOMA process for newly-mapped Wilson Creek parcels, and elevation-certificate workflow.
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