EMP Discrete Water Quality Data
Discrete water quality monitoring data from the Sacramento-San Joaquin Bay-Delta collected by the Environmental Monitoring Program. Data is also accessible via the [Environmental Data Initiative](https://portal.edirepository.org/nis/mapbrowse?scope=edi&identifier=458&revision=12).
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
EMP_DWQ_1975-2023 Discrete water quality data from the California Bay-Delta watershed. | Download | CSV | 06/05/25 |
EMP_DWQ_Stations_1975-2023 A list of stations in the San Francisco Bay-Delta Estuary sampled by the EMP during the years 1975-present. | Download | CSV | 06/05/25 |
EMP_DWQ_FlagCodes A list of quality assurance codes corresponding to the “flags” column in the main data table. | Download | CSV | 06/05/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
EMP_DWQ_metadata_methods Tables describing field and lab methods. | Download | PDF | 06/05/25 |