North Korea replaced its dependence on the Soviet Union with dependence on China. In 1993, China faced its own grain shortfalls and need for hard currency, and it sharply cut aid to North Korea. In 1997, So Kwan-hui, the North Korean Minister of Agriculture, was accused of spying for the United States government and sabotaging North Korean agriculture on purpose, thus leading to the famine. As a result, he was publicly executed by firing squad by the North Korean government. Causes Floods and drought The economic decline and failed policies provided the context for the famine, but the floods of the mid-1990s were the immediate cause. The floods in July and August 1995 were described as being "of biblical proportions" by independent observers. They were estimated to affect as much as 30 percent of the country. As devastating floods ravaged the country in 1995, arable land, harvests, grain reserves, and social and economic infrastructure were destroyed. The United Nations Department of Humanitarian Affairs reported that "between 30 July and 18 August 1995, torrential rains caused devastating floods in the Democratic People's Republic of Korea (DPRK). In one area, in Pyongsan county in North Hwanghae province, of rain were recorded to have fallen in just seven hours, an intensity of precipitation unheard of in this area... water flow in the engorged Amnok River, which runs along the Korea/China border, was estimated at 4.8 billion tons over a 72 hour period. Flooding of this magnitude had not been recorded in at least 70 years". The major issues created by the floods were not only the destruction of crop lands and harvests, but also the loss of emergency grain reserves, because many of them were stored underground. According to the United Nations, the floods of 1994 and 1995 destroyed around 1.5 million tons of grain reserves, and the Centers for Disease Control and Prevention stated that 1.2 million tons (or 12%) of grain production was lost in the 1995 flood. There were further major floods in 1996 and a drought in 1997. North Korea lost an estimated 85% of its power generation capacity due to flood damage to infrastructure such as hydropower plants, coal mines, and supply and transport facilities. UN officials reported that the power shortage from 1995 to 1997 was not due to a shortage of oil, because only two out of a total of two dozen power stations were dependent