Pajaro River Nutrients TMDLs


Problem Statement - This TMDL project will address surface water quality impairments in the Pajaro River Basin which are caused by exceedances of water quality criteria for nitrate, unionized ammonia, and associated nutrient-related problems such as excessive orthophosphate, dissolved oxygen imbalances, toxicity, and excess algal biomass.  At this time, these impairments are presumed to impact a range of current or potential designated beneficial uses of surface waters – including aquatic habitat, drinking water supply, groundwater recharge, recreation,  and agricultural supply. This project will identify the water quality impairments and develop a plan for the attainment of water quality objectives and the restoration of designated beneficial uses of surface waters.

Final TMDL Documents


Supplementary Information

TMDL Development Documentation

For Additional Information

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Status and Public Notices

Approval status

  • Central Coast Water Board
    - adopted July 30, 2015.
  • State Water Resources Control Board
    - approved April 5, 2016 .
  • Office of Administrative Law (OAL)
    - approved July 12, 2016, which is the effective date.
  • U.S. Environmental Protection Agency
    - approved October 6, 2016.