O'Shaughnessy Dam
Named in the records1923–2003
76 records of San Francisco tie this place, 1923–2003: 74 decisions of the Board of Supervisors and 2 facts read from city reports. Open the full list, with filters for years, kind and outcome.
- Kind
- Named in the records
- Records
- 76: 74 Board decisions, 2 facts from city reports
- Years
- 1923–2003
What the records say
The 60 most telling of its 76 records, in date order: the ones an editor picked first, then the highest scored. The one-line summaries were written by a language model from the printed page; open the page to check the wording.
| When | What the record says | Outcome | Source |
|---|---|---|---|
| 1923-03-19 | Engineers' association proposed naming the completed Hetch Hetchy dam the O'Shaughnessy Dam; referred to the Public Utilities Committee. | referred | Board decision scanned page ↗ |
| 1923-03-26 | Board names the Hetch Hetchy dam O'Shaughnessy Dam after City Engineer M. M. O'Shaughnessy. | passed | Board decision scanned page ↗ |
| 1923-09-24 | Utah Construction Company is to receive $298,276.27 (≈ $5.9 million in 2026 dollars), the final payment for the O'Shaughnessy Dam contract. | resolution | Board decision scanned page ↗ |
| 1927-07-05 | The Board adopted a resolution directing Public Works to place a plaque on O'Shaughnessy Dam thanking Senator Key Pittman for Hetch Hetchy. | passed | Board decision scanned page ↗ |
| 1927-12-27 | A bronze tablet honouring former Mayor James D. Phelan's Hetch Hetchy water work to be placed on O'Shaughnessy Dam. | passed | Board decision scanned page ↗ |
| 1927-12-27 | Bronze tablet honouring James Phelan to go on O'Shaughnessy Dam | passed | Board decision scanned page ↗ |
| 1933-09-29 | Board considers a resolution declaring public necessity to raise O'Shaughnessy Dam for more Hetch Hetchy water storage. | resolution | Board decision scanned page ↗ |
| 1933-10-02 | Passed $3,500,000 (≈ $90.7 million in 2026 dollars) Hetch Hetchy Dam bonds to increase O'Shaughnessy Dam height, subject to voter approval. | passed | Board decision scanned page ↗ |
| 1933-10-02 | Board proposes a November 7, 1933 special election on a $3.5M (≈ $90.7 million in 2026 dollars) bond to raise O'Shaughnessy Dam for Hetch Hetchy water. | ballot_measure | Board decision scanned page ↗ |
| 1933-10-16 | Proposed ordinance calls a November 7, 1933 special election on a $3,500,000 (≈ $90.7 million in 2026 dollars) bond to raise O'Shaughnessy Dam. | ordinance | Board decision scanned page ↗ |
| 1933-10-16 | Voters would decide on a $3.5 million (≈ $90.7 million in 2026 dollars) bond to raise O'Shaughnessy Dam for the Hetch Hetchy water supply. | passed | Board decision scanned page ↗ |
| 1934-01-02 | Public Utilities officials Byington and Cahill granted fifteen days' leave to visit Boulder Dam for O'Shaughnessy Dam plans. | passed | Board decision scanned page ↗ |
| 1934-01-02 | Board adopted leave for Utilities officials Byington and Cahill to visit Boulder Dam for O'Shaughnessy Dam plans. | passed | Board decision scanned page ↗ |
| 1934-01-08 | Voters authorized $3,500,000 (≈ $88.0 million in 2026 dollars) in a recent bond election to raise O'Shaughnessy Dam by 85 feet. | ballot_measure | Board decision scanned page ↗ |
| 1935-02-04 | The Public Utilities Commission was given sixty more days to award the O'Shaughnessy Dam enlargement contract. | passed | Board decision scanned page ↗ |
| 1935-02-18 | The Mayor was authorized to seek a larger federal grant of $1,068,529.50 (≈ $26.3 million in 2026 dollars) to raise O'Shaughnessy Dam; the resolution was adopted. | passed | Board decision scanned page ↗ |
| 1935-04-01 | Time to award the O'Shaughnessy Dam enlargement contract extended while federal grant talks continue. | resolution | Board decision scanned page ↗ |
| 1935-04-08 | Board adopted resolution approving a $1,058,000 (≈ $26.0 million in 2026 dollars) federal grant to raise the O'Shaughnessy Dam on the Tuolumne River. | passed | Board decision scanned page ↗ |
| 1935-04-08 | Board adopted Resolution 1590 approving a federal grant agreement to help raise the height of O'Shaughnessy Dam. | passed | Board decision scanned page ↗ |
| 1935-05-06 | Ordinance appropriating $197,338.75 (≈ $4.9 million in 2026 dollars) from Hetch Hetchy bond premium to raise O'Shaughnessy Dam passed for second reading. | passed first reading | Board decision scanned page ↗ |
| 1935-05-20 | Supplemental appropriation ordinance for raising O'Shaughnessy Dam was introduced; its outcome appears on a later page. | passed | Board decision scanned page ↗ |
| 1935-05-20 | Supplemental appropriation ordinance for raising O'Shaughnessy Dam was introduced; its final vote appears on a later page. | passed first reading | Board decision scanned page ↗ |
| 1937-08-02 | The Board finally passed an emergency ordinance appropriating $78,910.37 (≈ $1.8 million in 2026 dollars) from the Hetch Hetchy Bond Fund for the O'Shaughnessy Dam project. | passed | Board decision scanned page ↗ |
| 1937-09-27 | Funding of $637,840.89 (≈ $14.9 million in 2026 dollars) to complete enlarging O'Shaughnessy Dam passed first reading, drawn from Hetch Hetchy surplus. | passed first reading | Board decision scanned page ↗ |
| 1937-10-11 | Board finally passed a $637,840.89 (≈ $14.9 million in 2026 dollars) supplemental appropriation from the Hetch Hetchy Dam Fund to finish enlarging O'Shaughnessy Dam. | passed | Board decision scanned page ↗ |
| 1938-07-11 | Board voted to invite Congressmen Welch and Havenner to the O'Shaughnessy Dam dedication as its guests. | passed | Board decision scanned page ↗ |
| 1939-11-27 | Ordinance appropriating $4,000 (≈ $96,961 in 2026 dollars) from Hetch Hetchy funds for litigation over raising O'Shaughnessy Dam passed for second reading. | passed first reading | Board decision scanned page ↗ |
| 1939-12-11 | The Board finally passed a $4,000 (≈ $96,961 in 2026 dollars) appropriation from the Hetch Hetchy fund for litigation over raising O'Shaughnessy Dam. | passed | Board decision scanned page ↗ |
| 1945-01-02 | Judge St. Sure refused to reopen Transbay Construction Company's suit over O'Shaughnessy Dam and awarded the City $2,529 (≈ $47,340 in 2026 dollars) in costs. | other | Board decision scanned page ↗ |
| 1949-02-14 | Proposed $121,100 (≈ $1.7 million in 2026 dollars) from the Water Operating Fund to finish drum gates at O'Shaughnessy Dam, adding 20,000 acre feet of capacity. | ordinance | Board decision scanned page ↗ |
| 1949-02-28 | Public Utilities Commission spends $121,100 (≈ $1.7 million in 2026 dollars) to finish drum gates at O'Shaughnessy Dam, adding reservoir capacity. | passed | Board decision scanned page ↗ |
| 1959-03-23 | Emergency declared to inspect O'Shaughnessy Dam outlets so water can run a new Canyon power plant at Early Intake. | passed | Board decision scanned page ↗ |
| 1959-09-28 | Ordinance appropriating $1,725 (≈ $19,973 in 2026 dollars) from [name withheld] to buy a water sterilizer for O'Shaughnessy Dam passed for second reading. | passed first reading | Board decision scanned page ↗ |
| 1959-10-05 | Board finally passed an ordinance appropriating $1,725 (≈ $19,973 in 2026 dollars) from [name withheld] to buy a water sterilizer for O'Shaughnessy Dam. | passed | Board decision scanned page ↗ |
| 1972-10-16 | City buys power to resell, and repairs O'Shaughnessy Dam switchboard | passed | Board decision scanned page ↗ |
| 1977-11-07 | City asks for less water released from O'Shaughnessy Dam. | unknown | Board decision scanned page ↗ |
| 1977-12-19 | Board urges the President to ask Interior to cut water releases from O'Shaughnessy Dam during the drought. | passed | Board decision scanned page ↗ |
| 1977-12-19 | City asks US to cut O'Shaughnessy Dam water release in drought | passed | Board decision scanned page ↗ |
| 1977-12-19 | City asks US to cut O'Shaughnessy Dam water release in drought. | passed | Board decision scanned page ↗ |
| 1985 | O'Shaughnessy Dam hiking trails · other: Best trails constructed and maintained by the City and County of San Francisco | site | City report: San Francisco water & power : a history of the Municipal Water Department and Hetch Hetchy System scanned page ↗ |
| 1992-06-08 | More time was proposed for awarding the O'Shaughnessy Dam septic system rehabilitation contract, sent to the Finance Committee. | referred | Board decision scanned page ↗ |
| 1992-07-13 | The Public Utilities Commission's time extension for the O'Shaughnessy Dam septic system contract was approved, retroactive to May 26, 1992. | passed | Board decision scanned page ↗ |
| 1996-05-20 | $1,000,000 (≈ $2.1 million in 2026 dollars) for O'Shaughnessy Dam road repair sent to committee | referred | Board decision scanned page ↗ |
| 1996-06-03 | $1,000,000 (≈ $2.1 million in 2026 dollars) proposed for O'Shaughnessy Dam road repair | passed first reading | Board decision scanned page ↗ |
| 1996-06-10 | $1,000,000 (≈ $2.1 million in 2026 dollars) proposed for O'Shaughnessy Dam road repair | passed | Board decision scanned page ↗ |
| 2003-06-10 | Board continued the appeal of the negative declaration for the O'Shaughnessy Dam project to June 17, 2003. | continued | Board decision scanned page ↗ |
| 2003-06-17 | Dam water-release project's environmental clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-17 | Dam water-release project's environmental clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-17 | Bid to overturn dam project's environmental clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-17 | Bid to overturn dam project's environmental clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-17 | Written findings to overturn dam clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-17 | Written findings to overturn dam clearance put off. | pending | Board decision scanned page ↗ |
| 2003-06-24 | The Board approved a motion affirming the Planning Commission's negative declaration for the O'Shaughnessy Dam discharge modification project. | passed | Board decision scanned page ↗ |
| 2003-06-24 | Board motion M03-102 approved the negative declaration for the O'Shaughnessy Dam discharge modification project, after amendment, over the Hetch Hetchy appeal. | passed | Board decision scanned page ↗ |
| 2003-06-24 | Restore Hetch Hetchy and Sierra Club appealed the Planning Commission's negative declaration for the O'Shaughnessy Dam project; the public hearing was held. | hearing | Board decision scanned page ↗ |
| 2003-06-24 | Supervisors tabled a motion to reverse the Planning Commission's negative declaration for the O'Shaughnessy Dam Discharge Modification Project. | tabled | Board decision scanned page ↗ |
| 2003-06-24 | Restore Hetch Hetchy and the Sierra Club appealed the Planning Commission's approval of a negative declaration for O'Shaughnessy Dam; the Board heard the appeal. | hearing | Board decision scanned page ↗ |
| 2003-06-24 | Board tabled a motion to reverse the Planning Commission's negative declaration for the O'Shaughnessy Dam discharge modification. | tabled | Board decision scanned page ↗ |
| 2003-06-24 | Sierra Club appeal over O'Shaughnessy Dam heard in public | motion | Board decision scanned page ↗ |
| 1933 | O'Shaughnessy Dam raise · approved: $3.5 million bond issue approved by San Francisco for raising O'Shaughnessy Dam | project | City report: San Francisco water & power : a history of the Municipal Water Department and Hetch Hetchy System scanned page ↗ |
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