flood hazard area for Risk Category II+ under ASCE 7-22 Supplement 2; ASCE 24 freeboard on critical facilities
500-yr (0.2%)observed
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | Applies where the locally adopted building code references ASCE 7-22 with Supplement 2; check which edition the jurisdiction has adopted. Risk Category I structures may still use the 100-year floodplain. |
| As of | 2024–2025 |
| Source | ASCE/SEI 7-22 Supplement 2; ASCE 24 · Opening paragraphs; Supplement 2 requires Risk Category II and higher structures to use the 500-year floodplain |
| Review | checking…review by 2027-10-17 · standard cadence |
| Recorded changes | last 2026-07-02 |
| Claim id | flood-hazard-area-for-risk-category-ii-under |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.