/* Maybe change to water */
    switch (wc) {
        case WATER_CLASS_SEA:   MakeSea(tile);                break;
        case WATER_CLASS_CANAL: MakeCanal(tile, o, Random()); if (river) SetCanalOnRiver(tile); break;
        case WATER_CLASS_RIVER: MakeRiver(tile, Random());    break;
        default: break;
    }