Water spawning above landscape bug, can't seem to come right... Any ideas?

Hi guys

I am trying to use the water plugin to make a lake.

I have the water plugin and landmass plugin enabled. I have used water brush managers. Every time I place a water body, it spawns in weird lines above the actual landscape. Here is a picture of what is happening.

Any help would really be appreciated. I cannot find anything on it and haven’t changed any settings before selecting it.