Downhill Rivers

This project adds downhill river streams to the terrain generation using lithostitched to place into any world

180 Downloads

neoforgedecorationworldgen

Rent Server with this Mod

Screenshots

About this Mod

This mod adds rivers that generate across the overworld using lithostitched.

All screenshots in the gallery use the following mods:
DistantHorizons-3.0.3-b-1.21.1-fabric-neoforge
lithostitched-1.7.9-neoforge-21.1
middgard-1.2.1-1.21.1
Oh-The-Trees-Youll-Grow-neoforge-1.21.1-5.3.2
tectonic-3.0.22-neoforge-21.1

The only dependency is lithostitched 1.7.9 neoforge 1.21.1, although I think the best results are seen with the mods previously mentioned.

Now features a config for tweaking river curviness/amplitude, width, riverbank width, riverbank block palette, and biomes they spawn in.

Available Versions

Downhill Rivers 1.0.0.2alpha

MC 1.21.1neoforge

June 14, 2026

Downhill Rivers 1.0.0alpha

MC 1.21.1neoforge

June 13, 2026

How to Install Downhill Rivers on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "Downhill Rivers". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Downhill Rivers server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Downhill Rivers compatible with neoforge?

Downhill Rivers officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Downhill Rivers – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Downhill Rivers consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.