In 1.21, Mojang made slight changes to world generation to improve performance. Specifically, a change with how chunks are handled.
This causes the Lake feature to crash upon worldgen, as it checks in these now unloaded chunks for the biome, in order to determine if Water it places shall freeze or not.
This mod simply removes that check, therefore fixing the crash.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as Lake-Crash-Fix-1.0.jar — drop this file into the mods folder
- Download size: 35 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.