Norma relacionada
Practice Relating to Rule 42. Works and Installations Containing Dangerous Forces
Section A. Attacks against works and installations containing dangerous forces and against military objectives located in their vicinity
According to the Report on the Practice of China, any attack intended to destroy the banks or dams of a river with the aim of using the dangerous forces contained therein to gain a military advantage should be condemned. The report recounts how, in 1938, the Nationalist government decided to bomb a dam on the Yellow River to use the water to halt Japanese offensives. Although the Japanese troops were forced to retreat, the floods caused many casualties and severe damage among civilians. The Communist government subsequently condemned this method of warfare. 
Report on the Practice of China, 1997, Chapter 1.9.