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Hi,
I have done a setup for Tomawac-model over a larger enclosed basin, where I'm interested in the wave climate for a specific bay. However, when the waves propagate into the basin and the depths decreases I get (in my opinion) an unrealistic dissipation of waves. I don't see this dissipation in deep water. I have attached the setup-files as well as two figures showing the wave height at different points in the bay.

Does anyone have an idea what's wrong?

Hello,

Could you please precise why you consider that dissipation unrealistic ?
As you ask in your file to have
DEPTH-INDUCED BREAKING DISSIPATION =1
That is normal to have disspation depending on water height.

hope it helps