I do not eat food. But I do enjoy a light meal everyday. What am I?

Question

I've got a mouth, but I don't eat food.
I've got no nose, so I can't smell good.
I take deposits, but I'm not a bank.
I'm not the army, but I've got a tank.
At times I'm a river, at times I'm a pond.
When the dam purges, everything is gone.
What am I?

Answer 1

Answer is A PLANT