Not Crystal Springs. Hetch Hetchy, the damning of which legendarily caused John Muir, the founder of the Sierra Club, to die of a broken heart.
replyIt’s a nitpick but the words you are looking for are “dam”, “dammed”, and “damming”. Damning is a very different thing entirely.
replyThey both work, really
replyThey are referring to Hetch Hetchy.
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