Due to the ongoing COVID pandemic, SFPUC is planning to open the facilities for the 2022 season on a limited basis. See below for registration information. This process can be suspended or terminated at any time. We will continue to follow CDC and Public Health Officers advisories.

Welcome to the O’Shaughnessy Reservation System for Overnight Facilities at Hetch Hetchy Reservoir

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The Hetch Hetchy overnight facilities are Cottage 1,   Cottage 2, and the Bunkhouse. All eligible guests* as designated by Policy are permitted to reserve the overnight accommodations. The facilities at Hetch Hetchy Reservoir are open from May through October, weather permitting. Only one reservation per user, per season is allowed by policy.

Due to the ongoing COVID pandemic, SFPUC is opening the facilities for the 2022 season on a limited basis. This process can be suspended or terminated at any time. We will continue to follow CDC and Public Health Officers advisories. Due to public health guidance, the O’Shaughnessy Dam Lodging Facilities will abide by the following schedule:

  • May 12 – October 16
  • Two reservation slots per week:
    • Reservation slot #1:
      • Check-in on Monday at 3pm
      • Check-out on Wednesday at 12pm
    • Reservation slot #2:
      • Check-in on Thursday at 3pm
      • Check-out on Sunday at 12pm

The Lottery for the O’Shaughnessy Dam Lodging Facilities: Reserving accommodations at the O’Shaughnessy Facilities is a convenient three-step process:

1. Registration: From March 14-18, individuals seeking to reserve the O’Shaughnessy Dam Lodging Facilities must email osh@sfwater.org to register for the lottery. All registrants are subject to confirmation of eligibility by San Francisco Public Utilities Commission staff.

2. Reservation: During the first week of April, the SFPUC will complete the lottery. When it is your turn, based on the results of the lottery, you will receive an email notification from osh@sfwater.org indicating that you’re eligible to reserve the O’Shaughnessy Facilities. We will notify you if there are no longer any available dates.

3. Deposit Payment: If selected, an email will be sent to you with the deposit owed and rental guidelines that must reviewed, signed, and returned by the due date. Note that prompt payment of any deposit is required. Failure to pay reservation deposits within the required timeframe will result in automatic reservation cancellation and will not be reinstated.


*Eligible guests are:

  • Elected officials of the City and County of San Francisco: Mayor, Board of Supervisors
  • The San Francisco Public Utilities Commission
  • Elected officials within Hetch Hetchy’s service area
  • Elected Federal and State officials
  • Officers of departments of City government performing direct service for the SFPUC
  • SFPUC full-time permanent staff
  • Official delegates of the BAWSCA, MID, TID, non-profit education groups, and such other groups as the Commission may, from time to time, authorize

For any questions about the above process for the O’Shaughnessy Facilities, please contact osh@sfwater.org.