How to remove “water effect” on custom map? – December 8, 2022 at 10:48AM

As the title says , im modyfing the maps to create race tracks for an event for my clan during the Xmas holidays , im using gimp to “draw” the race tracks .
While testing I noticed that a flooding effect is created above the path. Does anyone know how to remove it?

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https://preview.redd.it/u8lxuepi2p4a1.jpg?width=1920&format=pjpg&auto=webp&s=05db4eb047a685c7d9ca72bb013894e08f06e716