Independent research and analysis of California's developed water systems
The proposed Del Puerto Canyon reservoir would inundate active landslides. This creates the risk of a lake tsunami, which could cause failure of the dam. Experts call for a geotechnical evaluation of the site.
Climate change will bring increased frequency and severity of flooding to the Central Valley. To avoid catastrophic flooding, major investments will need to be made.
In spite of protests by Delta legacy community groups, there has been substantial engineering work on a single tunnel project since DWR rescinded the approvals for the twin tunnel project on May 2, 2019.
This evaluation is done in comparison with the Principles for State Investment of Climate Adaptation, developed by California Water Research and supported by the One Water Network of environmental organizations.