The Environmental Monitoring Program (EMP) was established in 1971 to: 1) collect environmental data for resource management, 2) better understand estuarine processes, and 3) document compliance with water right decisions. EMP staff collect monthly water quality, chlorophyll, phytoplankton, benthic, and zooplankton samples at fixed locations in the Sacramento-San Joaquin Delta, Suisun Bay, and San Pablo Bay. The EMP is one of the nation’s oldest environmental monitoring programs and has compiled over four decades of consistent and comprehensive water quality and biological data.
- 1971: Start of Environmental Monitoring Program Water Rights Decision 1379
- 1978: Water Rights Decision 1485
- 1983: Addition of continuous monitoring stations
- 1999: Water Rights Decision 1641
- 1995: Integration with CDFW Zooplankton Monitoring
- 2017: New Research Vessel Sentinel