This is CDEC sensor data for Hetch Hetchy Reservoir with link to real time flood map
Lk Eleanor Diversion Tunnel Data from USGS
USGS flow page for Tuolumne River near Hetch Hetchy
Real Time Environmental Sensors in Tuolumne County
Here is a bibliography of Hetch Hetchy books in the Library of Congress
Here is the main index of the Conservation Movement Archives
Here is a goldmine of rare books about the Conservation Movement from the Library of Congress
Page 3 of the Museum of SF's Index featuring Hetch Hetchy
Yosemite General Management Plan: Hetch Hetchy
An article about Hetch Hetchy by Muir from the Boston Weekly Transcript, 1873
An article about Hetch Hetchy by Muir from the SCB, 1908
Restore Hetch Hetchy Home Page
An article by Carl Pope about Hodel's proposal to remove O'Shaughnessy Dam