Lakes and ponds are formed when water collects (or pools!) in a low place in the ground. Where does all that water come from? Find out in this exciting program, as Bill ponders this and many other freshwater questions. There will be a self-addressed label provided for return of materials. LOAN ONLY: RETURN AFTER 3 WEEKS. Developed by Disney Educational Productions. LIMIT OF 3 DVDS ORDERED AT A TIME.