The Flash Flood

When the storm comes, the rivers rise

Heavy rain can turn into a flood. Rivers, lakes and oceans overflow their banks and spread across low ground, then drain away when the storm passes, and the land grows back as if nothing happened.

How it works

• 🌧️ Floods are a weather event. Each time it starts raining there's a chance (25% by default) the rain turns into a flood.
• 🌊 Real water bodies overflow. Rivers, lakes and (optionally) oceans rise above their normal level and creep outwards over low ground. Water only grows out of existing bodies of water; nothing appears out of thin air.
• 📈 The water keeps rising. The flood starts at +1 block and climbs another block every 90 seconds, up to a configurable maximum (+2 by default).
• 🏠 It floods where it rains. Only outdoors and in rainy biomes: never inside buildings or caves, not in deserts or snowy biomes.

• 💧 It drains naturally. When the rain stops, the flood water turns back into flowing water and runs off into the river, highest and outermost first.
• 🌱 The land recovers. Grass, flowers, ferns, tall grass and sugar cane covered or washed away by the flood grow back once the ground is dry. Player-built blocks are never removed.
• 💾 Saved with the world. Floods are tracked per dimension, so a restart mid-flood never leaves permanent water behind.

Commands

Commands need operator permission.

Configuration

config/flash_flood_config.json

While a flood is active, vanilla's infinite-water-source rule is paused so flood water can't create permanent sources. Your setting is restored once the flood has drained.

Requirements

• Minecraft 1.21.1 — Fabric or NeoForge
• Architectury API 13.0.8+
• Fabric API (Fabric only)

Source and issues: GitHub