The Really Big Dam is 1000 feet wide, holds back a depth of 60 feet of water, and the lake behind the dam extends back one quarter of a mile. The Very Big Dam is also 1000 feet wide, holds back a depth of 50 feet of water, and the lake behind the dam extends back for 2 miles. If the dams were constructed in the same way, which dam had to be constructed to be strongest? (Assume the water levels do not vary seasonally.)