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2018 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.

Preliminary Lake Use Evaluation for the Chain of Lakes (2014)

The purposes of this 2014 study are to identify which potential lake uses may be more suitable for individual former quarries – especially where conflicting proposed alternatives uses may exist – and provide a framework for evaluating proposed uses as lakes are transferred to Zone 7 ownership. The evaluation generally does not preclude any given lake from distinct uses, but instead provides a tool for examining the benefits or impacts associated with a proposed use.

Preliminary Lake Use Evaluation for the Chain of Lakes

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 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!