# Why is my river deosn't moving? **URL:** \ **Category:** World Creation\ **Tags:** Water, unreal-engine, question\ **Created:** [February 12, 2025, 3:56pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456 "2025-02-12T15:56:19Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 12, 2025, 3:56pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/1 "2025-02-12T15:56:19Z")
HI, does anyone know why is my river not moving? ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/7/c/37c24585b590cab8cb5b62d890e7d070618de784.jpeg) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/9/e/89e979399aff3c85c67833bf8e0aabfa8b93dd9d.jpeg) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/f/a/ffa4c82a8abd423c94895177e0975b2312351ec4.jpeg) thanks for any replies ---
**Author:** ![BRGEzeHulton](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BRGEzeHulton](https://forums.unrealengine.com/u/BRGEzeHulton)\ **Post date:** [February 12, 2025, 6:49pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/2 "2025-02-12T18:49:40Z")
Hi, KKJMJ9 Let me help you with this. I recommend reviewing this document about System Actors and Water Body Actors, which may help you address your issue. If you need further assistance, please share any relevant information you have, including details about your actors. Feel free to reach out if you continue to encounter challenges or have new questions. Water System > **[Water System in Unreal Engine | Unreal Engine 5.5 Documentation | Epic...](https://dev.epicgames.com/documentation/en-us/unreal-engine/water-system-in-unreal-engine)** > > A collection of features, tools, and information about using the water rendering and meshing system in Unreal Engine. Water Body Actors > **[Water Body Actors in Unreal Engine | Unreal Engine 5.5 Documentation | Epic...](https://dev.epicgames.com/documentation/en-us/unreal-engine/water-body-actors-in-unreal-engine)** > > A look at the various water bodies available and how to use them to build worlds with the water system in Unreal Engine. ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 13, 2025, 8:30am UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/3 "2025-02-13T08:30:57Z")
@BRGEzeHulton i fix the Waves by tuning them on in river material but Now i have Gap between my river And lake Fromm witch Its comming from ---
**Author:** ![BRGEzeHulton](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BRGEzeHulton](https://forums.unrealengine.com/u/BRGEzeHulton)\ **Post date:** [February 13, 2025, 2:00pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/4 "2025-02-13T14:00:07Z")
Great, I’m glad you solved the waves. Regarding the gap between the river and the lake, please provide me with more information about the details of the river, either in video or photo. I believe you may need Transitional Material. He mentioned this material in the rendering section of the water body actor document. I leave you an image: ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/e/f/5ef0ff3854eace9a0ae4ed1b764c5d07fea3dc33.png) If you don’t have it configured, it could be why you get a gap. ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 13, 2025, 4:10pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/5 "2025-02-13T16:10:14Z")
![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/f/1/1f1252168b01beba9114ae4220bd8406d65f9ed1.jpeg) the gap is like in the middle of the transition ffrom river to the lake the same is on transition from river to ocean: ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/1/4/a14ebc7f41b03a0cf5fd6b29fef9e3a71d0acaed.jpeg) ---
**Author:** ![BRGEzeHulton](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BRGEzeHulton](https://forums.unrealengine.com/u/BRGEzeHulton)\ **Post date:** [February 13, 2025, 5:57pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/6 "2025-02-13T17:57:34Z")
I’m going to need more information: - Video of the problem - Unreal Engine Version - The materials you’re using - The details of the river A suggestion, right click while you have the river selected, check these 3 options. Then try to arrange the splines. - Visualize Water Velocity - Visualize River Width - Visualize Depth ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/5/f/c5fc7f00297a1c374090ad82c83127674061cfa2.jpeg) I leave you a video that may help you [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/4/0/840f77a2bc0b83feeffd268ae960dd1c0b3c1fc0.jpeg "Let's Build the RPG! - 16 - Unreal Engine 5 Water System Beginner Tutorial - Lakes and Rivers") ](https://www.youtube.com/watch?v=lMgCxZqvZ80&t=553) ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 14, 2025, 2:37pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/7 "2025-02-14T14:37:18Z")
video: I use UE5.5 materials on default settings: ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/0/0/20040270868cca62dca17d83379ffa5f6c1aabd8.png) only in Water\_MAterial\_river i changed Enable waves to true and even when i set it back to false the gap is still here. ---
**Author:** ![BRGEzeHulton](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BRGEzeHulton](https://forums.unrealengine.com/u/BRGEzeHulton)\ **Post date:** [February 14, 2025, 4:44pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/8 "2025-02-14T16:44:46Z")
If you are using Unreal’s free content, you can send me a TXT file with all the content in the outliner, and I can test it on my side. Please send me all the information on how to configure the river. The only solution I can think of now is to remove the splines from the affected area and reposition them. Did you set it to false or disable the option again? ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/4/4/3440894fe632093c7638a0f5903be7337e77f200.png) ---
**Author:** ![BRGEzeHulton](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BRGEzeHulton](https://forums.unrealengine.com/u/BRGEzeHulton)\ **Post date:** [February 14, 2025, 5:21pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/9 "2025-02-14T17:21:32Z")
I was able to replicate a small gap on my side. This is how I solved it. ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 14, 2025, 8:06pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/10 "2025-02-14T20:06:13Z")
I disable it ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 14, 2025, 8:20pm UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/11 "2025-02-14T20:20:27Z")
By turning the waves the gap got smaler on first river but still is there and on second the gap wanished outliner files: [outliner.txt](https://forums.unrealengine.com/uploads/short-url/E2S3QRNvunzGjRncQvESh8yj2s.txt) (321.5 KB) ---
**Author:** ![KKJMJ9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@KKJMJ9](https://forums.unrealengine.com/u/KKJMJ9)\ **Post date:** [February 17, 2025, 6:55am UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/12 "2025-02-17T06:55:47Z")
I finaly fixed that i must set the waves to false as you said and then i move the split point a bit before the transition ant that fixed that. Thank you ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [March 19, 2025, 6:56am UTC](https://forums.unrealengine.com/t/why-is-my-river-deosnt-moving/2329456/13 "2025-03-19T06:56:26Z")
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