The raised ridges down the sides rule out bullfrog. That they are white makes a Rana clamitans seem unlikely and I'd be inclined to think it's one of your leopard frogs or a pickerel. A photo would help.

You really don't have many options for Ranids:

http://amphibiaweb.org/cgi/amphib_qu...-state_code=IN
DNR: Frogs & Toads of Indiana