How to render water in the orthographic camera mode

I'm not a native speaker of English, so I apologize for my poor English in advance.

I would like to render water in orthographic mode.
I modified the shader of 'Assets\HoneyFramework\Materials\Water.shader' many times through trial and error
by reference to
    * honey.boards.net/thread/54/orthographic-camera-rivers-render
    * forum.unity3d.com/threads/depth-buffer-with-orthographic-camera.355878/
    * answers.unity3d.com/questions/1283604/shader-based-on-depth-with-orthographic-camera.html
    * and so on.

, but honey hex system doesn't render water in orthographic camera mode.

Could you show me the specific way or hints to render water in orthographic mode?

Thank you!