Iris-Pack-Overworld/biomes/mesa/river.json

{
    "name": "Mesa River",
    "vanillaDerivative": "DESERT_LAKES",
    "derivative": "DESERT_LAKES",
    "generators": [{
        "generator": "plain",
        "max": -4,
        "min": -15
    }],
    "layers": [
        {
            "style": {"style": "FRACTAL_WATER"},
            "zoom": 0.7,
            "palette": [
                {"block": "red_sand"},
                {"block": "orange_terracotta"}
            ]
        },
        {
            "minHeight": 2,
            "maxHeight": 3,
            "style": {"style": "STATIC"},
            "palette": [
                {"block": "red_sand"},
                {"block": "terracotta"},
                {"block": "gravel"},
                {"block": "red_sand"},
                {"block": "dirt"},
                {
                    "weight": 2,
                    "block": "red_sand"
                }
            ]
        }
    ],
    "decorators": [{
        "chance": 0.2,
        "palette": [{"block": "seagrass"}]
    }]
}