5 MANMADE Like Lake Mead or Lake Powell 6 MANMADE Like Lake Mead 7 MANMADE Like Lake Nasser 8 MANMADE Like reservoirs 9 MANMADE Produced artificially: Hyph. 10 MANMADE Not found in nature 11 MANMADE Not natural 12 MANMADE Synthetic 13 MANMADE Unnatural ...