generalized_tables:
  water_polygon_gen3:
    source: water_polygon
    sql_filter: area>15000000.0 AND waterway = ''
    tolerance: 350.0
  water_polygon_gen2:
    source: water_polygon
    sql_filter: area>2000000 AND waterway = ''
    tolerance: 200.0
  water_polygon_gen1:
    source: water_polygon
    sql_filter: area>500000 AND waterway = ''
    tolerance: 100.0
tables:
  water_polygon:
    fields:
    - name: osm_id
      type: id
    - name: geometry
      type: validated_geometry
    - name: area
      type: pseudoarea
    - key: name
      name: name
      type: string
    - name: name_en
      key: name:en
      type: string
    - name: natural
      key: natural
      type: string
    - name: landuse
      key: landuse
      type: string
    - name: waterway
      key: waterway
      type: string
    filters:
      exclude_tags:
      - [ "covered", "yes" ]
    mapping:
      landuse:
      - reservoir
      natural:
      - water
      - bay
      waterway:
      - river
      - riverbank
      - stream
      - canal
      - drain
      - ditch
    type: polygon