Water Park [SP/FiveM] 4.0 (SP)
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This is a universal installation tutorial for all add on map mods for GTA V Single Player
1 Open OpenIV and enable Edit Mode
2 Navigate to the path mods\update\x64\dlcpacks
3 Drag the map DLC folder into the dlcpacks folder then copy the name of this DLC folder
4 Return to the update folder and double click to open update.rpf
5 Open common\data find dlclist.xml right click it and select Edit
6 Scroll to the bottom of the file copy the last line of code press Enter and paste it on a new line
7 Replace the DLC name in the new line with the name of your map DLC folder
8 Save the file Installation is complete launch the game to use the mod
FiveM Server Add on Map Mod Installation Guide
This is a universal installation tutorial for add on map mods on FiveM servers
1 Download the map mod files and extract the entire map folder
2 Open your FiveM server main directory
3 Find and open the resources folder
4 Create a new folder named maps inside the resources folder
5 Move the extracted map folder into the maps folder
6 Open the map folder and check that it contains a fxmanifest lua file
7 Go back to your FiveM server main directory
8 Open the server cfg file with a text editor
9 Scroll down to the bottom of the file
10 Add a new line and write ensure followed by your map folder name
11 Save and close the server cfg file
12 Restart your FiveM server completely
13 Connect to your server and the map will be available
Water Park 4.0 Full Update Log
All water slides are upgraded with wet look reflective effects for realistic slide shading
Removed air conditioner unit models from the highest floor of the water park and replaced them with real style floor textures
Added railings to all staircases preventing players from falling off easily
Added tourist NPCs NPCs swim in pools NPCs relax by the pool with umbrellas tables chairs and long lounge chairs for sunbathing
Added tourist NPCs at the entrance of every water slide
Added floating swim rings in the swimming pool area
Added chain link fences around the water park
Added a security booth and security guards at the main gate plus NPCs queuing to enter the park
Rebuilt the single player SP DLC package to fix the game native memory cleanup issue reducing file size while keeping all map content intact
Compared with version 3.1 this version has smaller file size richer content and better performance
Tourist NPC Installation Steps
Open OpenIV and enable Edit Mode
Open this path mods/update/update.rpf/x64/levels/gta5/scenario
Place sanandreas coast ymt into this folder to replace the original file
After replacement launch the game Tourist NPCs will spawn in the water park and make the scene lively
Added the swimming fix file to the package to resolve the native game issue that some water areas cannot be used for swimming
No other changes to the map
How to use the swimming fix file
This problem is caused by the limitation of the original game The matching fix file is already included in this mod so you do not need to download additional resources
Open OpenIV and access this path mods\update\update.rpf\common\data\levels\gta5
Drag the provided heightmap dat file to replace the original file
Restart the game Now you can swim in all water areas of the water park
1 Open OpenIV and enable Edit Mode
2 Navigate to the path mods\update\x64\dlcpacks
3 Drag the map DLC folder into the dlcpacks folder then copy the name of this DLC folder
4 Return to the update folder and double click to open update.rpf
5 Open common\data find dlclist.xml right click it and select Edit
6 Scroll to the bottom of the file copy the last line of code press Enter and paste it on a new line
7 Replace the DLC name in the new line with the name of your map DLC folder
8 Save the file Installation is complete launch the game to use the mod
FiveM Server Add on Map Mod Installation Guide
This is a universal installation tutorial for add on map mods on FiveM servers
1 Download the map mod files and extract the entire map folder
2 Open your FiveM server main directory
3 Find and open the resources folder
4 Create a new folder named maps inside the resources folder
5 Move the extracted map folder into the maps folder
6 Open the map folder and check that it contains a fxmanifest lua file
7 Go back to your FiveM server main directory
8 Open the server cfg file with a text editor
9 Scroll down to the bottom of the file
10 Add a new line and write ensure followed by your map folder name
11 Save and close the server cfg file
12 Restart your FiveM server completely
13 Connect to your server and the map will be available
Water Park 4.0 Full Update Log
All water slides are upgraded with wet look reflective effects for realistic slide shading
Removed air conditioner unit models from the highest floor of the water park and replaced them with real style floor textures
Added railings to all staircases preventing players from falling off easily
Added tourist NPCs NPCs swim in pools NPCs relax by the pool with umbrellas tables chairs and long lounge chairs for sunbathing
Added tourist NPCs at the entrance of every water slide
Added floating swim rings in the swimming pool area
Added chain link fences around the water park
Added a security booth and security guards at the main gate plus NPCs queuing to enter the park
Rebuilt the single player SP DLC package to fix the game native memory cleanup issue reducing file size while keeping all map content intact
Compared with version 3.1 this version has smaller file size richer content and better performance
Tourist NPC Installation Steps
Open OpenIV and enable Edit Mode
Open this path mods/update/update.rpf/x64/levels/gta5/scenario
Place sanandreas coast ymt into this folder to replace the original file
After replacement launch the game Tourist NPCs will spawn in the water park and make the scene lively
Added the swimming fix file to the package to resolve the native game issue that some water areas cannot be used for swimming
No other changes to the map
How to use the swimming fix file
This problem is caused by the limitation of the original game The matching fix file is already included in this mod so you do not need to download additional resources
Open OpenIV and access this path mods\update\update.rpf\common\data\levels\gta5
Drag the provided heightmap dat file to replace the original file
Restart the game Now you can swim in all water areas of the water park
First Uploaded: May 30, 2026
Last Updated: 1 day ago
Last Downloaded: 15 minutes ago
57 Comments
More mods by GTAtietumoxing:
This is a universal installation tutorial for all add on map mods for GTA V Single Player
1 Open OpenIV and enable Edit Mode
2 Navigate to the path mods\update\x64\dlcpacks
3 Drag the map DLC folder into the dlcpacks folder then copy the name of this DLC folder
4 Return to the update folder and double click to open update.rpf
5 Open common\data find dlclist.xml right click it and select Edit
6 Scroll to the bottom of the file copy the last line of code press Enter and paste it on a new line
7 Replace the DLC name in the new line with the name of your map DLC folder
8 Save the file Installation is complete launch the game to use the mod
FiveM Server Add on Map Mod Installation Guide
This is a universal installation tutorial for add on map mods on FiveM servers
1 Download the map mod files and extract the entire map folder
2 Open your FiveM server main directory
3 Find and open the resources folder
4 Create a new folder named maps inside the resources folder
5 Move the extracted map folder into the maps folder
6 Open the map folder and check that it contains a fxmanifest lua file
7 Go back to your FiveM server main directory
8 Open the server cfg file with a text editor
9 Scroll down to the bottom of the file
10 Add a new line and write ensure followed by your map folder name
11 Save and close the server cfg file
12 Restart your FiveM server completely
13 Connect to your server and the map will be available
Water Park 4.0 Full Update Log
All water slides are upgraded with wet look reflective effects for realistic slide shading
Removed air conditioner unit models from the highest floor of the water park and replaced them with real style floor textures
Added railings to all staircases preventing players from falling off easily
Added tourist NPCs NPCs swim in pools NPCs relax by the pool with umbrellas tables chairs and long lounge chairs for sunbathing
Added tourist NPCs at the entrance of every water slide
Added floating swim rings in the swimming pool area
Added chain link fences around the water park
Added a security booth and security guards at the main gate plus NPCs queuing to enter the park
Rebuilt the single player SP DLC package to fix the game native memory cleanup issue reducing file size while keeping all map content intact
Compared with version 3.1 this version has smaller file size richer content and better performance
Tourist NPC Installation Steps
Open OpenIV and enable Edit Mode
Open this path mods/update/update.rpf/x64/levels/gta5/scenario
Place sanandreas coast ymt into this folder to replace the original file
After replacement launch the game Tourist NPCs will spawn in the water park and make the scene lively
Added the swimming fix file to the package to resolve the native game issue that some water areas cannot be used for swimming
No other changes to the map
How to use the swimming fix file
This problem is caused by the limitation of the original game The matching fix file is already included in this mod so you do not need to download additional resources
Open OpenIV and access this path mods\update\update.rpf\common\data\levels\gta5
Drag the provided heightmap dat file to replace the original file
Restart the game Now you can swim in all water areas of the water park
1 Open OpenIV and enable Edit Mode
2 Navigate to the path mods\update\x64\dlcpacks
3 Drag the map DLC folder into the dlcpacks folder then copy the name of this DLC folder
4 Return to the update folder and double click to open update.rpf
5 Open common\data find dlclist.xml right click it and select Edit
6 Scroll to the bottom of the file copy the last line of code press Enter and paste it on a new line
7 Replace the DLC name in the new line with the name of your map DLC folder
8 Save the file Installation is complete launch the game to use the mod
FiveM Server Add on Map Mod Installation Guide
This is a universal installation tutorial for add on map mods on FiveM servers
1 Download the map mod files and extract the entire map folder
2 Open your FiveM server main directory
3 Find and open the resources folder
4 Create a new folder named maps inside the resources folder
5 Move the extracted map folder into the maps folder
6 Open the map folder and check that it contains a fxmanifest lua file
7 Go back to your FiveM server main directory
8 Open the server cfg file with a text editor
9 Scroll down to the bottom of the file
10 Add a new line and write ensure followed by your map folder name
11 Save and close the server cfg file
12 Restart your FiveM server completely
13 Connect to your server and the map will be available
Water Park 4.0 Full Update Log
All water slides are upgraded with wet look reflective effects for realistic slide shading
Removed air conditioner unit models from the highest floor of the water park and replaced them with real style floor textures
Added railings to all staircases preventing players from falling off easily
Added tourist NPCs NPCs swim in pools NPCs relax by the pool with umbrellas tables chairs and long lounge chairs for sunbathing
Added tourist NPCs at the entrance of every water slide
Added floating swim rings in the swimming pool area
Added chain link fences around the water park
Added a security booth and security guards at the main gate plus NPCs queuing to enter the park
Rebuilt the single player SP DLC package to fix the game native memory cleanup issue reducing file size while keeping all map content intact
Compared with version 3.1 this version has smaller file size richer content and better performance
Tourist NPC Installation Steps
Open OpenIV and enable Edit Mode
Open this path mods/update/update.rpf/x64/levels/gta5/scenario
Place sanandreas coast ymt into this folder to replace the original file
After replacement launch the game Tourist NPCs will spawn in the water park and make the scene lively
Added the swimming fix file to the package to resolve the native game issue that some water areas cannot be used for swimming
No other changes to the map
How to use the swimming fix file
This problem is caused by the limitation of the original game The matching fix file is already included in this mod so you do not need to download additional resources
Open OpenIV and access this path mods\update\update.rpf\common\data\levels\gta5
Drag the provided heightmap dat file to replace the original file
Restart the game Now you can swim in all water areas of the water park
First Uploaded: May 30, 2026
Last Updated: 1 day ago
Last Downloaded: 15 minutes ago

















Ways to fix issues where the game is unplayable:
Firstly, you need to download this fix for swimming files: https://zh.gta5-mods.com/misc/swimmable-water-everywhere
Open OpenIV and navigate to the following path: mods\update\update.rpf\common\data\levels\gta5
Then, drag the "heightmap.dat" file in to replace it, and you can fix the non-swimmable areas in the game. Upon re-entering the game, you will be amazed to find that you can now swim.
@GTAtietumoxing alll good just leaving it where it originally was
@Punkman85 OK
Is the girl in red part of the mod or a separate mod, and if so which one?
@Think_Tank Hi there! The girl wearing red is not part of this Large Water Park V3.1 mod, she comes from an independent custom pedestrian mod that you have to install separately.
Quick reminder: If you haven’t already, grab the swimming fix config file from the pinned top comment to swim freely in all pools of the water park. Also our upgraded V4.0 version will be released within 3 days, it will auto spawn lots of tourist NPCs, floating swim rings and NPCs at every slide entrance for a much busier park atmosphere!
Amazing update! Can you teach us how to edit the ymt file to automatically add NPCs to the map?
@GTAtietumoxing I was wondering what that pedestrian mod was?
@GTAtietumoxing I like this mod, it works fine but my fps drops :p Congratulations, cool mod
@Think_Tank I actually do not know the specific source of this female ped mod. This character came pre installed inside a complete integrated game setup package I downloaded, so I cannot find its separate download link for you.
You can search custom female pedestrian addon mods on GTA5 Mods to find similar female character models.
Also my Water Park V4.0 update is ready to launch, the new version comes with built in tourist NPCs all over the park, you will not need extra ped mods to make the park full of people.
@phucduongdaonhan Thank you for your love of this update. I am quite busy with ongoing mod development work recently, so I do not have extra time to create a dedicated ymt file editing tutorial for now.
Our team has made a complete series of mod development teaching videos for creators in the Chinese community, covering not only map mod production, but also vehicle model, custom ped character, weapon asset and all other types of GTA mod production knowledge.
We plan to add special tutorial episodes focused on scenario ymt automatic NPC spawning in our future video updates, please stay tuned.
The ymt file included with Water Park 4.0 is fully pre configured already. Just install it by following the installation steps posted on the mod page, and you can get auto spawned tourist NPCs across the whole park without any manual editing.
@aldian0 Thank you very much for your positive feedback and support! I’m glad you like this mod.
Most players do not encounter obvious FPS drops after installing version 4.0, so the frame drop issue is mostly related to local computer settings and operating environment. You can try these solutions to improve performance:
1 Update your graphics card driver and install all necessary game runtime libraries to guarantee stable hardware performance.
2 If you use an NVIDIA graphics card, open the NVIDIA Control Panel and set GTA V to run exclusively on your dedicated discrete graphics card, avoid launching the game with integrated graphics.
3 You can also lower shadow and reflection graphics options inside the game, or temporarily disable other large resource-consuming mods to reduce system load.
Hope these suggestions can smoothly resolve your frame drop problem!
@GTAtietumoxing The fps drop is not because of this mod but because my graphics card is old and only 2gb but I'm glad I tried this mod, for your mod "Reservoir Water Park" it runs well without any fps drop, thanks for sharing :)
@aldian0 Thank you so much for taking the time to explain your hardware situation! I totally get it now, low 2GB VRAM old graphics cards will definitely lead to frame drops when loading large map assets.
I’m really glad this seaside Large Water Park V4.0 still runs smoothly for you overall despite your limited hardware. I will keep optimizing all my upcoming water-themed map mods to have better compatibility with low-spec GPUs, and I plan to create more unique waterside scene maps in the future, please stay tuned for my new releases. Thanks a lot for your five-star support!
This is really great. Unfortunately, it causes FPS drops because my PC can't handle it. Overall, it's very good, and I've been waiting for this mod for a long time. I'm glad someone finally made it. Hopefully future updates will make it even better and continue delivering the best quality.
Really fantastic job
Not just fun to look at, actually fun to play
I did everything according to the installation instructions, but the map doesn't appear for me. What's the problem?
@2EZ4RNDI Thank you so much for your long-time support and such nice words, it means a lot to know you’ve been waiting for this seaside Water Park V4.0 for ages.
The frame drops you’re seeing are just down to your PC not having enough hardware power to handle all the map assets. You could try updating your graphics driver first, and head into the NVIDIA Control Panel to make sure GTA V runs on your dedicated graphics card instead of integrated graphics. Turning down shadow and reflection settings inside the game will also lighten the load a fair bit, and shutting off any other big map or character mods you’ve got installed can help smooth things out too.
I’m planning to keep tweaking and optimizing all the model assets in future releases so the park runs far better on lower-spec setups. Really appreciate your love and hopes for this mod!
@LRNSR Thank you so much for your full five-star rating and such lovely comment, I’m really glad you love this seaside water park mod. I’m gonna keep making more water-themed map mods later and keep polishing all the details to make them even better.
@floydturbo It means so much to hear this, I put a lot of work into making sure the park isn’t just nice looking but also has fun interactive parts for players to enjoy. I’ll keep creating more vivid and playable water-themed maps for everyone later.
@hosseinRTJ I totally get how annoying it is when the map won’t pop up even after you follow all install steps. Thousands of players have gotten this park working perfectly fine, only a tiny handful run into invisible map issues, and it almost always comes down to three common game setups.
A lot of people who can’t load the map are running pure vanilla online game files, or they’re using LSPDFR police task modded game builds, those two environments aren’t compatible with this map at all. This mod only works smoothly on standard offline single-player integrated game packs or FiveM dedicated server clients, those two setups have all the required base assets to render the water park properly.
You can tell me which game build you’re using right now, I’ll walk you through simple fixes to get the map showing for you.