据美国《工程新闻纪录》1978年11月2日,第201卷,第18期报道,1978年10月20日,伊太普水电站用55吨胶质炸药,炸平了导流明渠入口和出口处两座98英尺高、560英尺长的混凝土拱围堰,迫使巴拉那河317000秒立方英尺的流量通过330英尺宽、280英尺深、6650英尺长、总挖方量为2600万立方码的明渠. According to the “Engineering News Record” issued by the United States on November 2, 1978, Volume 201, Number 18, on October 20, 1978, Itaipu Hydropower Station fry the entrance and exit of the diversion channel with 55 tons of plastic explosives Two concrete cofferdams, 98 feet in height and 560 feet in length, forced the 317,000-second cubic foot of the Paraná River to pass through open channels 330 feet wide, 280 feet deep and 6650 feet long with a total excavation of 26 million cubic yards.