water must be present on only one of the waterwheel's side of contact, and the water source must be connected to a large body of water inside a river biome
All errors gone.
The windmill now requires enough space around it to function. In addition, having it slightly above ground will increase power generation slightly.
failing to meets requirements
This one is inside a river, so only the other two errors appear.
![Thumbnail 2 requirements added. [For biomes: it only works in the overworld now; there is a biome tag].](https://media.forgecdn.net/attachments/1620/918/2026-04-07_23-06-07-png.png)
2 requirements added. [For biomes: it only works in the overworld now; there is a biome tag].
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