Poke away Mr. Secretary, just understand you won't be the first to pick up a sharp stick and aim it at San Francisco.
From the August 7, 1987 edition of the L.A. Times:
Hodel Would Tear Down Dam in Hetch Hetchy
SAN FRANCISCO — Environmentalists were stunned and San Francisco officials were outraged Thursday by Interior Secretary Donald P. Hodel's suggestion that Hetch Hetchy reservoir in Yosemite National Park be drained and the valley restored to its natural state.
Hetch Hetchy Valley, dammed and flooded in the 1920s despite bitter opposition from Sierra Club founder John Muir, provides drinking water for an estimated 2 million people in the San Francisco area, and both critics and supporters of Hodel's idea pointed Thursday to major financial, political and logistical barriers.
In a move he described as very preliminary, Hodel directed his staff to investigate the possibility of finding an alternative water supply for San Francisco and restoring Hetch Hetchy. Restoration would require razing the 430-foot, 64-year-old O'Shaughnessy Dam on the Tuolomne River and dismantling power plants downstream.
Hodel said in a staff memo that persuading San Francisco officials to "go along with us is only the beginning." Once the reservoir is emptied, he wrote, "we will have to clean up the valley and revegetate it, and remove the dam." He said that within a decade, "we will see green mountain meadows and young forests and wildlife."...
If it weren't for those darned environmentalists, we would all be enjoying those "green mountain meadows and young forests and wildlife" today. (hee hee)