The Bethel Island Municipal Improvement District (BIMID), approximately 3,500 acres in size, encompasses Bethel Island located in northeastern Contra Costa County. BIMID is one of the eight western Delta islands that the DWR has identified as critical to control the salinity in the Delta, protecting water quality to all water users in the State. Bethel Island supports both agricultural activities together with a large on-island residential population and commercial/recreational businesses. On island improvements are below mean sea level which creates a levee system that functions more like a dam than an intermittent flood control facility. There have been no changes in land use on Bethel Island since 2009. The Delta Coves project, approved by Contra Costa County in the 19705 for up to 561 homes, appears to be moving forward after a long period of inactivity. In August 2015, Bethel Island voters approved a new assessment fee to help fund enhanced ongoing maintenance and the local matching funds required for future grants and special projects. Of the total 11.5 miles of BIMID levees, approximately 3.5 miles (29 percent) are below Delta Specific PL 84_99 standards (PL 84-99 Authority. Federal Law which gives the Corps the legal authority to conduct emergency preparation, response, and recovery activities and to supplement local efforts in the repair of flood damage reduction projects that are damaged by floods). Nearly one mile (or eight percent) of the levee system was below the Hazard Mitigation Plan (HMP) standard of one foot above the loo-year floodplain but has since been raised to the HMP standard with the recent completion of a Department of Water Resources (DWR) Special Project. Reconfirmation of the current non-coterminous 501 for BIMID is recommended at this time.