TMDL Progress Assessment Documents: Pesticides

Concentrations of two pesticides (diazinon and chlorpyrifos) have been substantially reduced in the SF Bay Delta watershed, however newer classes of pesticides are causing aquatic toxicity in these waterways.

• SF Bay Delta Water Quality Progress Report: Lower Feather River & Lower Sacramento River Diazinon and Chlorpyrifos TMDL (pdf) (466.56 KB, 06/15/2015)
  Water Quality Progress Report for diazinon and chlorpyrifos in the Lower Sacramento and Feather Rivers.
• SF Bay Delta Water Quality Progress Report: Lower San Joaquin River Diazinon and Chlorpyrifos TMDL (pdf) (438.5 KB, 06/15/2015)
  Water Quality Progress Report for diazinon and chlorpyrifos in the Lower San Joaquin River.
• SF Bay Delta Water Quality Progress Report: Sacramento County Urban Streams Diazinon and Chlorpyrifos TMDL (pdf) (993.96 KB)
  Water Quality Progress Report for diazinon and chlorpyrifos in Sacramento County Urban Creeks.
• SF Bay Delta Water Quality Progress Report: Sacramento-San Joaquin Delta diazinon and chlorpyrifos TMDL (pdf) (481.42 KB, 06/15/2015)
  Water Quality Progress Report for diazinon and chlorpyrifos in the Sacramento-San Joaquin River Delta.
• SF Bay Delta Water Quality Progress Report: SF Bay Urban Streams Pesticide & Toxicity TMDL (pdf) (405.82 KB, 06/15/2015)
  Water Quality Progress Report for diazinon and chlorpyrifos in San Francisco Bay Area Urban Creeks.