Chase County, NE: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Chase County scores at the 3.7th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 3 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Chase County
Out of 5 homes FEMA counts inside Chase County's mapped flood zone, 0 carry the flood policy federal law requires there — 0% compliance, short of full coverage. Looking beyond the mandated zone, 0% of all residential structures in Chase County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Chase County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Chase County ranks 3033 — 1 being the highest hazard nationally — and 2900 by population among all 3144 counties covered here, where 1 is the largest. About 3,764 people live in Chase County, Nebraska, spread over 894.425 square miles.
Your street may differ from Chase County's average
1 of Chase County's 2,637 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Chase County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.