Standard Stream Erosion

Q:
My hypothesis was that the sand/clay would all go on the table and create a mini flood.
The equipment we used was a stream table and sand/clay,water and  measuring cup and a ruler.The procedure was the sand/clay were on a side of the stream table so we put 3 cups of water and then we watched as the erosion happen. What intercede me was how it made the basin drainage and how the water went threw the whole and into the bucket.This experiment was very interesting and and it was a lot of fun.