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U.S. State Working Group��OA Data and Water Quality ��

August 28, 2025

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Agenda

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States exploring links between OA and water quality (10 minutes)

    • Jessie Turner, OA Alliance

Overview and key takeaways from West Coast Water Quality Practitioners Meeting, October 2024 (20 minutes)

    • Micah Horwith, WA State Dept. of Ecology

Roundtable + Discussion with U.S. Working Group Members (30 minutes)

    • Kyla Kelly, Water Quality Program Manager, Ocean Protection Council, California Natural Resources Agency
    • Micah Horwith, Ocean Acidification Senior Scientist, Washington State Department of Ecology
    • Kaegan Scully-Engelmeyer, Water Quality Standards Specialist, Oregon Department of Environmental Quality

Reflections from Federal Partners (10 minutes)

    • NOAA Ocean Acidification Program
    • National Estuarine Research Reserve System (NERRS)

Next Steps- Utilizing the OA Information Exchange (5 minutes)

    • Edith Mari, OA Alliance

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States, OA(H) and Water Quality

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** Slides credited to Hayley Carter, Ocean Science Trust. U.S. State to State Meeting of the OA Alliance, 2019.

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** Slides credited to Hayley Carter, Ocean Science Trust. U.S. State to State Meeting of the OA Alliance, 2019

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  • Common oceanographic themes across CA Current; able to elevate issues w/in states & nationally if we “joined forces”
  • Built upon momentum of single state action and continued to expand regionally applicable science
  • “Moving beyond oysters” – broaden relevance & engagement on OA to other management spheres (including water quality).
  • Panel added component of hypoxia (OA & H often linked in time and space)
    • Increased relevance for fisheries.
    • Hypoxia and pH already on the radar of water quality regulating bodies; provided link to nutrients and nutrient reduction plans.

Value of the Collaboration to Address a Regional Challenge

** Slides credited to Hayley Carter, Ocean Science Trust. U.S. State to State Meeting of the OA Alliance, 2019

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  • Shortcomings of existing criteria.

  • Water quality criteria should be expanded to encompass other acidification parameters.

  • Development of biological criteria to improve assessment of acidification effects.

  • Using ecologically relevant criteria to support OA management.

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Mid-Atlantic OA Workshop

  • On September 10-11, 2024 Baltimore Maryland.
  • + 50 representatives: six U.S. states, federal government agencies and partners including the National Aquarium, PEW, and the National Caucus of Environmental Legislators.
  • Climate communications and ocean acidification.
  • Information for purpose:
    • Risk and vulnerability assessments.
    • Measuring coastal acidification for mitigation.
    • Blue carbon and funding conservation.

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Takeaways + Meeting Summary

  • OA parameters can add value to a number of existing ocean and coastal monitoring management (fisheries/ aquaculture; water quality; future mCDR strategies like OAE).

  • Seek clarity of objectives.

  • Roadblocks to getting data into a useful format that leads to action and improved response:
    • Measurement and analysis capacity, compatibility.
    • Regional alignment in approaches.
    • Fitting with criteria filings under federal CWA.

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Water Quality Q&A on the Ocean Acidification Information Exchange (OAIE)��

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Staying Engaged

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Coming Soon/ Reminders

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What to expect…

  • October 16th @10am PST/ 1pm EST
    • UN Framework Convention on Climate Change
    • Coastal & Estuarine Research Federation
    • Opportunities for engagement at these events.

  • Reminder of “OA Messaging for Purpose” categories and phrases available (https://www.oaalliance.org/uswg)

  • Curated content coming soon for states seeking additional messaging options.

  • Regional OA StoryMaps with Aquarium Conservation Partnership.