{
  "generated_at": "2026-06-27T03:53:47.457408+00:00",
  "claims": [
    {
      "claim_id": "harvey_hwm_houston_region_scored",
      "claim": "535 Houston-region USGS Harvey high-water marks were scored in this project.",
      "value": 535,
      "source_type": "generated",
      "source_file": "site/data/harvey-summary.json",
      "method": "Count of features in site/data/harvey-hwm-fema-scored.geojson."
    },
    {
      "claim_id": "zone_x_marks",
      "claim": "170 scored marks intersect current FEMA Zone X/minimal or reduced hazard context.",
      "value": 170,
      "source_type": "generated",
      "source_file": "site/data/harvey-surprise-distance.geojson",
      "method": "Filtered marks where fema_context == mapped_x_or_minimal."
    },
    {
      "claim_id": "material_zone_x_marks",
      "claim": "54 Zone X/minimal-context marks have at least 2 ft of observed water above ground.",
      "value": 54,
      "source_type": "generated",
      "source_file": "site/data/harvey-surprise-distance.geojson",
      "method": "Filtered Zone X/minimal-context marks where height_above_ground_ft >= 2."
    },
    {
      "claim_id": "material_zone_x_far_marks",
      "claim": "Some material Zone X/minimal-context marks are at least 0.25 miles from current SFHA geometry.",
      "value": 9,
      "source_type": "generated",
      "source_file": "site/data/harvey-summary.json",
      "method": "Point-to-nearest-current-SFHA distance in EPSG:3083."
    },
    {
      "claim_id": "official_harvey_hwm_collection",
      "claim": "USGS and FEMA collected 2,123 high-water marks after Hurricane Harvey and used them with streamgage data to make 19 inundation maps.",
      "source_type": "official",
      "source_url": "https://www.usgs.gov/news/national-news-release/post-harvey-report-provides-inundation-maps-and-flood-details-largest",
      "caveat": "Official regional collection, not a complete parcel-level record for every flooded place."
    },
    {
      "claim_id": "official_harvey_rainfall",
      "claim": "NOAA/NHC reported Harvey rainfall above 60 inches near Nederland and Groves, Texas.",
      "source_type": "official",
      "source_url": "https://www.nhc.noaa.gov/data/tcr/AL092017_Harvey.pdf",
      "caveat": "Point rainfall maxima; not uniform rainfall over all Houston-region points."
    },
    {
      "claim_id": "official_fema_nfhl_context",
      "claim": "FEMA NFHL is the official flood-hazard map data service used here for current map context.",
      "source_type": "official",
      "source_url": "https://www.fema.gov/flood-maps/national-flood-hazard-layer",
      "caveat": "This project uses NFHL as screening context only, not as a formal FEMA determination."
    }
  ]
}