Causes of flashes in your vision. As the vitreous âgelâ within your eye shrinks, it may pull on the retina (the focusing surface at the back of your eye). If the retina is peeled away from the back of the eye, it can cause flashes of light in your vision to occur. A retinal tear or detached retina is a serious and potentially sight-threatening condition.
Three Gorges Dam. The Three Gorges Dam Project was completed in 2009. Situated at Sandouping Town of Yichang City, Hubei Province, the Three Gorges Dam is the largest hydro-power station in the world with an annual energy output of 84.7 billion kilowatt-hours.
  The world's largest hydroelectric dam is the Three Gorges Dam located on the Yangtze River in China.   Anoth â¦ er famous dam is the Hoover Dam, located on the Colorado River at the boarder of Arizona and Nevada (US Route 93).  Anmother one is Kaptai Dam, Chittagong, Bangladesh.onfidence votes 5.4K. What I've been able to find for the Hoover Dam says ~$50 million in the 1930's, today that's roughly $690 million. The entire Boulder Canyon Project cost around $165 million, which included the Hoover Dam.