Hetch Hetchy Communications System Project

View of Hetch Hetchy Valley.
View of Hetch Hetchy Valley.

NPS Photo by Adrienne Freeman

The current equipment, utilizing existing phone lines, transmits voice and data communications essential to the operation and security of HHW&P’s electric and water supply utilities, and is also used by Yosemite personnel for park communications. The existing radio and fiber optic equipment are obsolete and no longer supported by their manufacturers; the proposed project would update this infrastructure by replacing or updating components of the communication system throughout Tuolumne County, including potentially adding one new site within Yosemite National Park.

Documents pertaining to the Hetch Hetchy Communications System Upgrade Project:

  • For an overview of the proposed project read through the associated fact sheet (PDF)
  • Public comments 1 (1.12 MB PDF) and 2 (1.58 MB PDF) received during the scoping period.
  • Hetch Hetchy Environmental Assessment/Intital Study Page - Public Review and Comment Period Open - Oct. 2, 2007 - Nov. 2, 2007
  • FONSI- Finding of No Significant Impact, Assessmet of Actions Having an Effect on Cultural Resources, Tuolumne Wild and Scenic River Section 7 Determination, Erratta Sheets, and Public Comment and Response Report - April 2008 (3.3MB PDF)
View of O'Shaughnessy Dam and the Hetch Hetchy Reservoir.
View of O'Shaughnessy Dam and the Hetch Hetchy Reservoir.

NPS Photo by Adrienne Freeman

Last updated: March 1, 2015

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