{
 "titre": "Baromètre du sous-sol parisien — part de surface en secteur de risque par arrondissement",
 "auteur": "Sous-sol Paris",
 "url": "https://www.sous-sol-paris.com/donnees/",
 "date_calcul": "2026-09-15",
 "licence": "ODbL",
 "sources": [
  "https://opendata.paris.fr/explore/dataset/plub_carriere/information/",
  "https://opendata.paris.fr/explore/dataset/plub_gypse/information/",
  "https://opendata.paris.fr/explore/dataset/arrondissements/information/"
 ],
 "attribution": "Données originales : Ville de Paris (Paris Data), licence ODbL. Calculs : Sous-sol Paris.",
 "methode": "Polygones reprojetés en EPSG:2154, fusionnés par thème, intersectés avec les limites d'arrondissement.",
 "totaux": {
  "surface_ha": 10537.3,
  "carrieres_ha": 3024.2,
  "gypse_ha": 2098.1,
  "total_ha": 4603.5,
  "nb_polygones_carrieres": 23,
  "nb_polygones_gypse": 11,
  "carrieres_pct": 28.7,
  "gypse_pct": 19.9,
  "total_pct": 43.7
 },
 "arrondissements": [
  {
   "arrondissement": 1,
   "nom": "Louvre",
   "code_postal": "75001",
   "surface_ha": 182.5,
   "carrieres_ha": 0.0,
   "carrieres_pct": 0.0,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 0.0,
   "total_pct": 0.0
  },
  {
   "arrondissement": 2,
   "nom": "Bourse",
   "code_postal": "75002",
   "surface_ha": 99.1,
   "carrieres_ha": 0.0,
   "carrieres_pct": 0.0,
   "gypse_ha": 47.5,
   "gypse_pct": 47.9,
   "total_ha": 47.5,
   "total_pct": 47.9
  },
  {
   "arrondissement": 3,
   "nom": "Temple",
   "code_postal": "75003",
   "surface_ha": 117.1,
   "carrieres_ha": 0.0,
   "carrieres_pct": 0.0,
   "gypse_ha": 22.7,
   "gypse_pct": 19.4,
   "total_ha": 22.7,
   "total_pct": 19.4
  },
  {
   "arrondissement": 4,
   "nom": "Hôtel-de-Ville",
   "code_postal": "75004",
   "surface_ha": 160.1,
   "carrieres_ha": 0.0,
   "carrieres_pct": 0.0,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 0.0,
   "total_pct": 0.0
  },
  {
   "arrondissement": 5,
   "nom": "Panthéon",
   "code_postal": "75005",
   "surface_ha": 253.9,
   "carrieres_ha": 152.8,
   "carrieres_pct": 60.2,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 152.8,
   "total_pct": 60.2
  },
  {
   "arrondissement": 6,
   "nom": "Luxembourg",
   "code_postal": "75006",
   "surface_ha": 215.3,
   "carrieres_ha": 122.4,
   "carrieres_pct": 56.8,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 122.4,
   "total_pct": 56.8
  },
  {
   "arrondissement": 7,
   "nom": "Palais-Bourbon",
   "code_postal": "75007",
   "surface_ha": 409.0,
   "carrieres_ha": 34.9,
   "carrieres_pct": 8.5,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 34.9,
   "total_pct": 8.5
  },
  {
   "arrondissement": 8,
   "nom": "Élysée",
   "code_postal": "75008",
   "surface_ha": 388.0,
   "carrieres_ha": 8.2,
   "carrieres_pct": 2.1,
   "gypse_ha": 24.5,
   "gypse_pct": 6.3,
   "total_ha": 32.7,
   "total_pct": 8.4
  },
  {
   "arrondissement": 9,
   "nom": "Opéra",
   "code_postal": "75009",
   "surface_ha": 217.8,
   "carrieres_ha": 31.8,
   "carrieres_pct": 14.6,
   "gypse_ha": 162.2,
   "gypse_pct": 74.5,
   "total_ha": 162.2,
   "total_pct": 74.5
  },
  {
   "arrondissement": 10,
   "nom": "Entrepôt",
   "code_postal": "75010",
   "surface_ha": 289.2,
   "carrieres_ha": 132.2,
   "carrieres_pct": 45.7,
   "gypse_ha": 289.1,
   "gypse_pct": 100.0,
   "total_ha": 289.1,
   "total_pct": 100.0
  },
  {
   "arrondissement": 11,
   "nom": "Popincourt",
   "code_postal": "75011",
   "surface_ha": 366.5,
   "carrieres_ha": 10.5,
   "carrieres_pct": 2.9,
   "gypse_ha": 38.1,
   "gypse_pct": 10.4,
   "total_ha": 45.9,
   "total_pct": 12.5
  },
  {
   "arrondissement": 12,
   "nom": "Reuilly",
   "code_postal": "75012",
   "surface_ha": 1631.5,
   "carrieres_ha": 138.7,
   "carrieres_pct": 8.5,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 138.7,
   "total_pct": 8.5
  },
  {
   "arrondissement": 13,
   "nom": "Gobelins",
   "code_postal": "75013",
   "surface_ha": 714.9,
   "carrieres_ha": 612.9,
   "carrieres_pct": 85.7,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 612.9,
   "total_pct": 85.7
  },
  {
   "arrondissement": 14,
   "nom": "Observatoire",
   "code_postal": "75014",
   "surface_ha": 561.5,
   "carrieres_ha": 561.2,
   "carrieres_pct": 99.9,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 561.2,
   "total_pct": 99.9
  },
  {
   "arrondissement": 15,
   "nom": "Vaugirard",
   "code_postal": "75015",
   "surface_ha": 849.5,
   "carrieres_ha": 367.4,
   "carrieres_pct": 43.3,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 367.4,
   "total_pct": 43.3
  },
  {
   "arrondissement": 16,
   "nom": "Passy",
   "code_postal": "75016",
   "surface_ha": 1637.3,
   "carrieres_ha": 245.6,
   "carrieres_pct": 15.0,
   "gypse_ha": 0.0,
   "gypse_pct": 0.0,
   "total_ha": 245.6,
   "total_pct": 15.0
  },
  {
   "arrondissement": 17,
   "nom": "Batignolles-Monceau",
   "code_postal": "75017",
   "surface_ha": 566.9,
   "carrieres_ha": 10.5,
   "carrieres_pct": 1.9,
   "gypse_ha": 390.3,
   "gypse_pct": 68.8,
   "total_ha": 390.3,
   "total_pct": 68.8
  },
  {
   "arrondissement": 18,
   "nom": "Buttes-Montmartre",
   "code_postal": "75018",
   "surface_ha": 599.6,
   "carrieres_ha": 208.9,
   "carrieres_pct": 34.8,
   "gypse_ha": 567.5,
   "gypse_pct": 94.6,
   "total_ha": 599.6,
   "total_pct": 100.0
  },
  {
   "arrondissement": 19,
   "nom": "Buttes-Chaumont",
   "code_postal": "75019",
   "surface_ha": 679.3,
   "carrieres_ha": 210.1,
   "carrieres_pct": 30.9,
   "gypse_ha": 549.4,
   "gypse_pct": 80.9,
   "total_ha": 597.8,
   "total_pct": 88.0
  },
  {
   "arrondissement": 20,
   "nom": "Ménilmontant",
   "code_postal": "75020",
   "surface_ha": 598.3,
   "carrieres_ha": 176.1,
   "carrieres_pct": 29.4,
   "gypse_ha": 6.8,
   "gypse_pct": 1.1,
   "total_ha": 179.8,
   "total_pct": 30.0
  }
 ]
}