Procedure

1. In a 36 ins. x  4.5 ins. x  6 ins. plexiglass tank, I inserted a 18 ins. x  4 ins. plexiglass inclined plane at the source end of the tank. This impact slope was glued inclined downwards at an angle of about 45 degrees from the top diagonally down to the bottom. There was about 9.5 ins. of this inclined slope extending from the top of the water tank.

2. I inserted a 11 ins x 4 ins x 3 in. inclined slope at the runup end of the tank. The slope was inclined at an angle of about 55 degrees from the top and sloping downward from the top of the water tank.

3. I filled the tank with room temperature water until it was about 2.75 ins. deep and added a few drops of blue food colouring to the water for effect.

4. I filled a sturdy elongated plastic bag with tiny, aquarium gravel until it was about 5 - 6 lbs. to represent the landslide that will hit the water.

5. I placed a wooden ledge at the same level as the runup end to represent land. I placed a few model buildings and trees on the wooden ledge for effect.

6. From about 11-12 ins. above the surface of the water, I released the plastic bag containing the aquarium gravel down the impact slope to simulate a landslide. I was careful not to drop the bag to cause a splash at the source.