Lake Oahe "a memorandum and an executive order asking USACE to expedite its consideration of the company’s application for an easement to start construction." The USACE subsequently "withdrew its call for the environmental study." On 7 February 2017, the USACE approved an easement through Lake Oahe. On 9 February 2017, the Cheyenne River Sioux filed the first legal challenge to the easement, citing an 1851 treaty and interference with the religious practices of the tribe. Lake Oahe Lake Oahe (oh-WAH'-hee) is a large reservoir behind Oahe Dam on the Missouri River; it begins in central South Dakota and continues north into North
Sogamoso Dam Sogamoso Dam The Sogamoso Dam is a concrete-face rock-fill dam on the Sogamoso River in northern Colombia. It is located west of Bucaramanga in Santander Department and north of Bogotá. The primary purpose of the dam is hydroelectric power generation and its power plant has an installed capacity of which increased Colombia's generating capacity by 10 percent. Construction on the dam began in February 2009 and its first 273 MW Francis turbine-generator was commissioned on 1 December 2014. The other two generators were operational by 20 December 2014. The US$1.74 billion dam and power plant is owned by ISAGEN. INGETEC