Delta Conveyance Policy Principles Mar 1, 2009 Policy Documents In March 2009, ACWA released its “Policy Principles on Delta Conveyance,” to guide the association’s advocacy on related issues. The document discuss the failure of the “through Delta” experiment, and provides recommendations related to Delta Conveyance and principles to ensure that Delta solutions protect statewide interests. The policy document addresses the need to reduce impacts on endangered fish and wildlife, improve water supply and water supply reliability, and improve water quality, as well as commit to comprehensive long-term solutions that protect water rights, support the development of local surface and groundwater storage projects, and provide funding for water use efficiency measures and local resources development, among other issues.