{
  "type": "minecraft:delta_feature",
  "config": {
    "contents": {
      "Name": "minecraft:water",
      "Properties": {
        "level": "0"
      }
    },
    "rim": {
      "Name": "minecraft:ice"
    },
    "size": {
      "type": "minecraft:uniform",
      "value": {
        "min_inclusive": 4,
        "max_inclusive": 7
      }
    },
    "rim_size": {
      "type": "minecraft:uniform",
      "value": {
        "min_inclusive": 1,
        "max_inclusive": 2
      }
    }
  }
}
