{
  "$schema": "https://welldot.org/schema/v2/well.schema.json",
  "version": "2.4",
  "x-welldot-example": {
    "illustrative": true,
    "based_on": "https://siagasweb.sgb.gov.br/layout/detalhe.php?ponto=1500001090"
  },
  "well_type": "tubular",
  "well_purpose": [
    "production"
  ],
  "name": "Poço raso nº 16 — Baixada (Belém/PA)",
  "well_driller": "Perfurações Pentágono",
  "construction_date": "1979-10-27",
  "obs": "Poço raso de 12 m, perfurado por percussão a jato d'água, captando o aquífero livre dos sedimentos recentes. Alta vazão com pouco rebaixamento, mas vulnerável: abandonado em 1997 após contaminação por esgoto; boca aberta encontrada em 2024.",
  "well_id": [
    {
      "authority": "Operadora",
      "id": "16",
      "primary": true
    }
  ],
  "location": {
    "lat": -1.41917,
    "lng": -48.44083,
    "elevation": 5,
    "properties": {
      "timezone": "America/Belem",
      "crs": "EPSG:4326",
      "lat_precision": 0.0003,
      "lng_precision": 0.0003,
      "elevation_datum": "x-imbituba",
      "elevation_precision": 5,
      "original_crs": "EPSG:31982"
    }
  },
  "well_depth": 12,
  "bore_hole": [
    {
      "from": 0,
      "to": 12,
      "diameter": 203,
      "drilling_method": "x-jetting"
    }
  ],
  "well_case": [
    {
      "from": -0.6,
      "to": 6,
      "type": "pvc",
      "diameter": 168
    }
  ],
  "reduction": [],
  "well_screen": [
    {
      "from": 6,
      "to": 12,
      "type": "pvc",
      "diameter": 168,
      "screen_slot": 1,
      "slot_type": "slotted"
    }
  ],
  "surface_case": [],
  "hole_fill": [
    {
      "from": 0,
      "to": 1,
      "type": "seal",
      "diameter": 203,
      "description": "Argila compactada"
    },
    {
      "from": 1,
      "to": 12,
      "type": "gravel_pack",
      "diameter": 203,
      "description": "Cascalho"
    }
  ],
  "lithology": [
    {
      "from": 0,
      "to": 1,
      "description": "Solo amarelo-amarronzado",
      "color": "#b98a4e",
      "texture": {
        "code": 612,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Sedimentos recentes",
      "aquifer_unit": "Não aquífero"
    },
    {
      "from": 1,
      "to": 6,
      "description": "Areia fina amarelo-avermelhada",
      "color": "#d9925a",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Sedimentos recentes",
      "aquifer_unit": "Aquífero livre raso"
    },
    {
      "from": 6,
      "to": 12,
      "description": "Areia grossa amarelo-alaranjada",
      "color": "#e0a050",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Sedimentos recentes",
      "aquifer_unit": "Aquífero livre raso"
    }
  ],
  "fractures": [],
  "caves": [],
  "hydrodynamic_events": [
    {
      "id": "evt-01",
      "type": "constant_rate",
      "datetime": "1979-10-27T07:00:00-03:00",
      "equipment": "Bomba centrífuga de superfície",
      "static_level": 0.18,
      "steps": [
        {
          "rate": 48,
          "duration": 1440,
          "readings": [
            {
              "elapsed": 1,
              "depth": 1.8
            },
            {
              "elapsed": 2,
              "depth": 1.87
            },
            {
              "elapsed": 3,
              "depth": 1.91
            },
            {
              "elapsed": 5,
              "depth": 1.96
            },
            {
              "elapsed": 7,
              "depth": 1.99
            },
            {
              "elapsed": 10,
              "depth": 2.02
            },
            {
              "elapsed": 15,
              "depth": 2.06
            },
            {
              "elapsed": 20,
              "depth": 2.09
            },
            {
              "elapsed": 30,
              "depth": 2.13
            },
            {
              "elapsed": 45,
              "depth": 2.17
            },
            {
              "elapsed": 60,
              "depth": 2.2
            },
            {
              "elapsed": 90,
              "depth": 2.23
            },
            {
              "elapsed": 120,
              "depth": 2.26
            },
            {
              "elapsed": 180,
              "depth": 2.3
            },
            {
              "elapsed": 240,
              "depth": 2.33
            },
            {
              "elapsed": 360,
              "depth": 2.37
            },
            {
              "elapsed": 480,
              "depth": 2.39
            },
            {
              "elapsed": 600,
              "depth": 2.42
            },
            {
              "elapsed": 720,
              "depth": 2.43
            },
            {
              "elapsed": 900,
              "depth": 2.46
            },
            {
              "elapsed": 1080,
              "depth": 2.47
            },
            {
              "elapsed": 1260,
              "depth": 2.49
            },
            {
              "elapsed": 1440,
              "depth": 2.5
            }
          ]
        }
      ],
      "recovery": {
        "readings": [
          {
            "elapsed": 1,
            "depth": 0.88
          },
          {
            "elapsed": 2,
            "depth": 0.81
          },
          {
            "elapsed": 3,
            "depth": 0.77
          },
          {
            "elapsed": 5,
            "depth": 0.72
          },
          {
            "elapsed": 10,
            "depth": 0.66
          },
          {
            "elapsed": 15,
            "depth": 0.62
          },
          {
            "elapsed": 30,
            "depth": 0.55
          },
          {
            "elapsed": 60,
            "depth": 0.49
          },
          {
            "elapsed": 120,
            "depth": 0.43
          }
        ]
      }
    }
  ],
  "aquifer_analysis": [
    {
      "id": "an-1979",
      "datetime": "1979-10-30T10:00:00-03:00",
      "source_event_ids": [
        "evt-01"
      ],
      "method": "x-specific_capacity",
      "static_level": 0.18,
      "static_level_source_id": "evt-01",
      "dynamic_level": 2.5,
      "flow_rate": 48,
      "specific_capacity": 20.69
    }
  ],
  "pump_installations": [
    {
      "id": "pump-1979",
      "installed_at": "1979-11-05T09:00:00-03:00",
      "removed_at": "1997-12-19T09:00:00-03:00",
      "type": "x-surface_centrifugal",
      "power_source": "grid",
      "rated_flow_rate": 45,
      "rated_power": 7.5,
      "intake_depth": 5,
      "riser_diameter": 100,
      "riser_material": "pvc",
      "notes": "Bomba de superfície com tubo de sucção."
    }
  ],
  "water_samples": [
    {
      "id": "am-1997",
      "datetime": "1997-10-08T09:00:00-03:00",
      "sample_type": "routine",
      "sampling_method": "pump_discharge",
      "sampling_point": {
        "type": "pump_discharge"
      },
      "results": [
        {
          "parameter": {
            "code": "nitrate_as_n",
            "vocabulary": "welldot"
          },
          "value": 14.2,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "chloride",
            "vocabulary": "welldot"
          },
          "value": 48,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "ammonia_as_n",
            "vocabulary": "welldot"
          },
          "value": 1.8,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "total_coliforms",
            "vocabulary": "welldot"
          },
          "presence": true,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        },
        {
          "parameter": {
            "code": "e_coli",
            "vocabulary": "welldot"
          },
          "presence": true,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        }
      ]
    }
  ],
  "history_logs": [
    {
      "id": "log-01",
      "datetime": "1979-11-05T09:00:00-03:00",
      "category": "status_change",
      "status": "active",
      "description": "Poço em operação."
    },
    {
      "id": "log-02",
      "datetime": "1997-10-15T09:00:00-03:00",
      "category": "incident",
      "severity": "critical",
      "description": "Nitrato acima do limite e coliformes: urbanização sem esgoto ao redor do poço.",
      "sample_ids": [
        "am-1997"
      ]
    },
    {
      "id": "log-03",
      "datetime": "1997-12-19T09:00:00-03:00",
      "category": "status_change",
      "status": "abandoned",
      "description": "Poço desligado e bomba retirada; não foi tamponado."
    },
    {
      "id": "log-04",
      "datetime": "2024-08-06T10:00:00-03:00",
      "category": "status_change",
      "status": "abandoned",
      "description": "Vistoria confirma o abandono: boca do poço aberta em terreno baldio. Recomendado tamponamento imediato."
    }
  ]
}