O’Shaughnessy Dam Centennial
9 videos • 181 views • by SF Water Power Sewer Construction of the O’Shaughnessy Dam began in 1919 and was completed in May of 1923. The dam helps provide clean drinking water for 2.7 million people and also generates 100% greenhouse-gas-free electricity that powers City facilities. These videos look back at the history of the dam as we celebrate 100 years of this engineering marvel.