The rest of the water supply comes from local reservoirs. In the Sunol Valley that includes two: Calaveras and San Antonio Reservoirs. Calaveras, when full, is our system’s second largest drinking water reservoir, second only to Hetch Hetchy Reservoir. It also stores only local watershed waters from the Arroyo Hondo and Alameda Creek. San Antonio Reservoir, on the other hand, stores water from San Antonio Creek, and we can also store Hetch Hetchy water there as well.
Some facts about local dams and reservoirs that you may not know:
• The dam at San Antonio Reservoir is called Turner Dam, after former SFPUC General Manager, James H. Turner.
Existing Calaveras Dam. The New dam is being constructed directly downstream of the existing one. The site looks very different today!
Catch up on the Do you know your Tap Water series.
See you around Sunol Valley!