Flood zone · ZIP 66603
Flood zone in Topeka, KS
ZIP 66603 (Kansas) — flood zone summary sourced from FEMA NFHL. Refreshed on the cadence of the primary regulator with every claim cited to the source record.
What lands here
Pages show the flood zone code, what it means in plain English (1% annual chance zone, 0.2% annual chance zone, or outside mapped hazard), and the base flood elevation where assigned.
Source & refresh
FEMA NFHL. Refreshed quarterly loma updates. Stale data is flagged, never silently served. Primary source →
Limitations specific to this source
For an official flood-zone determination (required by lenders), consult the FEMA Map Service Center directly. zipradar shows informational classifications only.
Kansas context
Radon, tornadoes, Ogallala aquifer
Kansas has Zone 1 radon coverage statewide and sits in central Tornado Alley. Western KS water systems draw from the depleting Ogallala aquifer; EPA SDWIS shows arsenic + nitrate compliance pressure in some rural systems.
See Kansas state page for the full state-level rollup across all 12 dimensions.
Read more on flood zone
Editorial deep-dives explaining the source data, its limits, and how to read it.
Flood zones explained — what AE, X, and VE actually mean
Plain-English guide to FEMA flood-zone codes (A, AE, AH, V, VE, X, X-shaded). What the 1% and 0.2% annual-chance zones mean for your property and your insurance.
Wildfire Hazard Potential — what the USFS scale means and how to defend your home
Plain-English guide to the USDA Forest Service's Wildfire Hazard Potential 1–5 scale, how to read your community's risk, and concrete home-defense measures.
Wildfire insurance in 2026 — why premiums spiked and what to do
California, Oregon, Colorado, and other Western states have seen wildfire insurance premiums double or homeowners drop entirely. Plain-English guide to the 2026 market.
FEMA flood zones — AE vs. X vs. VE in plain English
FEMA's National Flood Hazard Layer maps every US property's flood-zone designation. Here's what AE, X, VE, and AO actually mean for your insurance bill.
Full dashboard for ZIP 66603
Flood zone is one of twelve dimensions zipradar federates per address. See the full federated summary for ZIP 66603:
Open Topeka, KS dashboard →