How can I make water waves ?

Hello

I have some questions about creating water-waves. I know how I can make normal waves to let my water look like it's moving in a direction. This is my Script: (It also has some Functions to let my Water looking a bit random)

 #pragma strict
 
 var Speed : float = 0.001;
 private var offset : float; 
 
 var offsetSpeed : float = 0.1;
 // How smooth should it be
 var Smooth: float = 20;
 
 // Speed of the Wave
 var SpeedX : float = 20;
 var SpeedY : float = 20;
 
 // This makes the water more random
 var RandomFactor : float = 2;
 var Randomizer : float = 1;
 private var yVelocity = 0.0;
 
 // The Mesh
 private var mesh : Mesh;
 // The Base Vertices of the Mesh
 private var BaseHeight : Vector3[];
 private var vertices: Vector3[];
 
 function Update()
 {    
     // change offset
     offset += Speed;
     
     //This Variable is to make the waves more random
     Randomizer = Mathf.SmoothDamp(Randomizer,Random.value*RandomFactor,yVelocity,10/RandomFactor);
     
     // Move the Mesh Up and Down    
     for (var i = 0; i < vertices.Length; i++)
     {
         //vertices[i].y = Mathf.Sin((offset+vertices[i].x+vertices[i].z)*Speed+offset*Bonus)/Smooth;
         vertices[i].y =  Mathf.Sin( (offset+vertices[i].x*Randomizer) *SpeedX + (offset+vertices[i].z*Randomizer) *SpeedY )/ Smooth*Randomizer;
         vertices[i].y += BaseHeight[i].y;
     }
     
     // Attach the new vertices to the mesh    
     mesh.vertices = vertices;
     mesh.RecalculateBounds();
 }

But how can I make the water react to a contact, I tried some things with my normal function but can't get a good effect.

I'm happy about every idea you have for this.