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

  • Many or all of the documents available on this webpage are presented in a Portable Document Format (PDF).  You will need Adobe Acrobat Reader, or similar software, to view these documents.  You can download the latest version of Adobe Acrobat Reader, free of charge, by clicking here. Users with visual disabilities can visit the Adobe accessibility webpage here for conversion tools and information to help make PDF files accessible.
  • Some documents available on this webpage may be presented as Microsoft PowerPoint files. (note: if you don’t have PowerPoint installed on your computer, you can review several options from Microsoft here).

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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.