if you have a drainer in your pool then drain out all of the water.

I was setting up my pool today and i accidentally left the hose on inside the pool area ( i was watering grass) and NOW THE WHOLE POOL ( formerly flat like a Frisbee) IS FLOODED WITH WATER AND IT LOOKS LIKE A CYLINDER!!!!!! The water is about six inches from the edges. What can i do? Did i just flood the pool!