WaterBodyRiver not carving into landscape properly

I am trying to make a river for my map but for some reason it refuses to carve or morph into the terrain surrounding it. I have been battling with this for hours and finally decided to ask for some help. I’ve searched on every forum I could find and there didn’t seem to be anyone else with the same issue. My lake seems to have no problem whatsoever doing what it is supposed to. Both of these were just imported and have no changes made to default settings.

For context to answer some basic follow ups:

I’m on Unreal Engine 5.8.4

I have the Water, Buoyancy, and Water Advanced plugins enabled properly.

The river disappears/clips when I move it below the terrain, while the lake carves deeper into the landscape.

I have made sure that the brush is attached to the water layer in the landscape settings.

Both the lake and the river have “affects landscape” checked on.

Any assistance is more than appreciated. I am happy to provide more screenshots if necessary.