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California WaterFix Draft Supplemental EIR/EIS Available for Public Review and Comment

cawaterfixThe Zone 7 Board of Directors would like to encourage the public to review and comment on the Draft Supplemental Environmental Impact Report/ Environmental Impact Statement (EIR/EIS) for California WaterFix. The Draft Supplemental EIR/EIS was released on July 17, 2018 and comments are being accepted through 5:00 p.m. PST on September 17, 2018. The document is available at Comments can be submitted by mail to "WaterFix Comments 2018," P.O. Box 1919, Sacramento, CA 95812 or by email to with the subject line "Draft Supplemental EIR/EIS Comments." 

The Draft Supplemental EIR/EIS evaluates proposed modifications to the project that was approved by the California Department of Water Resources in July, 2017. The proposed modifications would only affect the project footprint, and operations of the approved project would not change. Consistent with the approved project, water would be diverted from the Sacramento River through three fish-screened intakes on the east bank of the Sacramento River between Clarksburg and Courtland and conveyed by tunnels to a new forebay in the south Delta. Diversion facilities would also be identical to the approved project, with Intakes 2, 3, and 5 operating with a maximum capacity of 3,000 cubic feet per second each.

In September, 2017, the Zone 7 Board of Directors adopted a resolution to support California WaterFix. California WaterFix would provide a much-needed upgrade to the aging through-Delta conveyance currently used by Zone 7 to import roughly 80 percent of the Valley's supplies. Despite Zone 7's efforts to increase supply reliability through other sources, the Water Supply Evalution shows that Zone 7 will continue to rely on water conveyed through the Delta and delivered to the Valley via the SWP for about 70 percent of its supplies.


flood control maintenance map2018 Flood Control Channel Maintenance

Zone 7's flood control channels experienced a historic amount of damage due to the winter storms of 2017. This summer the flood protection program is embarking on efforts to repair a large portion of the damages. Progress and any impacts to publicly accessible maintenance roads can be viewed on this map.


Major Capital Project Updates

Zone 7 implements capital improvement projects to continue providing a reliable supply of high quality water, flood protection, and groundwater basin management. Click on the links below to obtain more information about the major projects in progress:


South Chain of Lakes Study

Starting on April 30, 2018, Zone 7 and the quarry operator, CEMEX, are collaborating on a groundwater study near the intersection of Isabel and Vineyard Avenues at Lakes A and B of the future Chain of Lakes facility. The study will include drilling into the ground near the lakes to collect data on aquifer conditions and soil characteristics. Drilling activities are not expected to impact traffic or trail access, as the drill rig will be within the perimeter of the mining area. The study is expected to last about a month.


 60 year calendarZone 7 Celebrates its 60th Anniversary

To commemorate our 60th anniversary, while also promoting water awareness, Zone 7 Water Agency has created this 18-month (July 2017 - December 2018) calendar. Zone 7 Water Agency, in partnership with local water retailers, invited 4th-grade students within our service area to share their artistic talents by creating a poster that illustrates the importance of water conservation, flood protection, and watershed management. Winners of the poster contest are featured in the calendar. An electronic version of the calendar is now available for download.

Check out our 60th anniversary flyer covering Zone 7's history from 2007 to 2017. Expanding on that, our 60th anniversary booklet covers Zone 7's history from 1957 to 2017.

Also, take a look at the flyer celebrating the 50th anniversary of construction of Lake Del Valle.



California WaterFix Critical for Zone 7 Water Supply

Efforts to restore the Delta ecosystem and improve water reliability for 25 million Californians, including those living in Zone 7's service area, reached a milestone with release of the updated Bay Delta Conservation Plan, a modified preferred alternative and partially recirculated draft environmental review documents. Visit California Water Fix to learn more.

"Living Arroyos" Program

This partnership aims to restore the urban streams and streamside habitats of the Livermore-Amador Valley while continuing to protect drinking water supplies and prevent flooding. To learn more, including about volunteer opportunities, visit our Living Arroyos page.

Water Wise WebsiteWater-Wise Gardening Tips Online!

Tri-Valley Water-Wise Gardening is an interactive website loaded with lots of useful information specifically for Tri-Valley gardeners. It includes photos, a searchable plant database, water-saving tips, and much more!

Zone 7 owns many flood control channels and creeks in the Cities of Livermore, Pleasanton and Dublin, and in unincorporated areas of Eastern Alameda County. If you see a spill or dumping in any waterway, follow the directions below to report it:

  1. If a spill is currently happening, call 911.
  2. If the situation is not urgent, call:
  • Zone 7 Administrative offices at (925) 454-5000 during business hours, Monday-Friday, 8 a.m. to 5 p.m.
  • Water Treatment Plant Operator at (925) 447-6704, ext. 1, during non-business hours.





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