The O'Shaughnessy dam was worked to give a water supply to San Francisco

history channel documentary science The O'Shaughnessy dam was worked to give a water supply to San Francisco, raising the water level somewhere in the range of 300 feet over the riverbed and making a store around 8 miles in length holding 117 billion gallons of water for a large number of San Francisco region inhabitants. The water goes from the Sierra Nevada to the San Francisco landmass totally taking into account gravity. There are no force pumps required in transporting the water, however there are two hydro electric plants along the way that produce vitality from the water-flow.In 1912, John R. Freeman distributed a preparatory configuration for the Hetch Hetchy framework, the Freeman Plan, which incorporated the gravity idea, a noteworthy stride towards the Hetch Hetchy repository. The undertaking required a demonstration of Congress and development started in 1914, after the Raker Act, which conceded San Francisco privileges of-way and open terrains use for the Hetch Hetchy and other open works ventures. The dam is named for Michael Maurice O'Shaughnessy, who touched base in San Francisco in 1885, having cruised around the Horn from Ireland with a Bachelor of Engineering degree from the Royal University of Dublin. O'Shaughnessy assumed control over the occupation of City Engineer for San Francisco in 1912, and was The Boss of the Hetch Hetchy venture. The primary period of the dam and repository task was finished in 1923, and a second stage raising the stature of the dam was done in 1938.

There has dependably been debate about the Hetch Hetchy Valley in regards to O'Shaughnessy Dam and the Reservoir from back when it was first being wanted to today. Should it have ever been assembled? Should it be expelled now to reestablish the Hetch Hetchy valley? We won't touch on those themes here, there are a lot of wellsprings of feeling and level headed discussion out there for you to survey, we simply need to share data about this district. In this way, in view of that, lets step far from the repository and its water for a moment, and stroll off into the area itself.There are numerous chances to trek in the territory encompassing Hetch Hetchy store, keeping in mind there is no swimming in the supply to keep up its immaculate quality for drinking water, angling is permitted in season. There are streams and waterways adjacent for swimming, and there is loads of regular excellence to appreciate. Notwithstanding the Ranger Station at Hetch Hetchy, there are enlightening showcases about the dam and store and a stopping and excursion region by the dam (mutts are permitted ONLY around there).