I’ve recently gotten back into modding with forge. Last time I used forge.

Adding this line to the biome constructor disabled lake spawning.  

this.BiomeDecorator.generateLakes = false; 

 

but BiomeDecorator doesn’t have it anymore.

 

So how do I go about disabling lakes from spawning in one of my biomes?

Handle net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate, check that it's EventType is LAKE_WATER, check that the biome is yours and set the result to deny.

Alternatively it seems that the field generateLakes was renamed to generateFalls.