Kōtoku Wamura (Japanese: 和村幸得, Hepburn: Wamura Kōtoku; 21 February 1909 – 18 October 1997) was a Japanese politician who was the mayor of Fudai in Iwate Prefecture from 1947 to 1987. He was credited with creating the floodgates that saved the village of Fudai, Iwate from the 2011 Tōhoku earthquake and tsunami.
Source: “Kōtoku Wamura”, English Wikipedia (CC BY-SA 4.0), excerpt