{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/flood-zone/74133/","name":"Flood zone for ZIP 74133 — Tulsa (S Memorial), OK","description":"Flood zone data for ZIP 74133 (Tulsa (S Memorial), Oklahoma), sourced from FEMA NFHL.","topic":{"slug":"flood-zone","label":"Flood zone","source":"FEMA NFHL","sourceUrl":"https://www.fema.gov/flood-maps/national-flood-hazard-layer","refreshCadence":"Quarterly LOMA updates","summary":"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.","limitations":"For an official flood-zone determination (required by lenders), consult the FEMA Map Service Center directly. zipradar shows informational classifications only."},"place":{"zip":"74133","city":"Tulsa (S Memorial)","state":"OK","stateFull":"Oklahoma","county":"Tulsa County","countySlug":"tulsa-county","geo":{"latitude":36.0526,"longitude":-95.8788}},"stateContext":{"topConcern":"Tornadoes, induced seismicity, water-supply","narrative":"Oklahoma sits in the heart of Tornado Alley. Induced seismicity (oil/gas wastewater injection) has flagged some EPA SDWIS small systems. Radon risk is Zone 1-2 across most counties."},"radonZone":null,"airQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-07","canonicalUrl":"https://zipradar.org/topic/flood-zone/74133/","zipDashboardUrl":"https://zipradar.org/zip/74133/","zipDashboardApiUrl":"https://zipradar.org/api/zip/74133/","primarySourceUrl":"https://www.fema.gov/flood-maps/national-flood-hazard-layer","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/flood-zone/74133/"}}