Water Layer Help Please - Water is leaking through my landscape edge

Hi There,

I’ve created a small pond on top of a cliff but noticed the water layer bulges out of the cliff edge.

When I turn off the water layer in landscape mode it removes it, however it then messes with my pond and leaves a bleed of water on the cliff edge, so it doesn’t actually fix it.

Does anyone know how I can keep my pond but remove this bit sticking out of my cliff?
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Would really appreciate any help, thank you.