{"id":4791,"date":"2025-11-14T18:19:22","date_gmt":"2025-11-14T18:19:22","guid":{"rendered":"https:\/\/castco.org\/?post_type=case-study&p=4791"},"modified":"2025-12-04T16:02:39","modified_gmt":"2025-12-04T16:02:39","slug":"eutrophication-assessments","status":"publish","type":"case-study","link":"https:\/\/castco.org\/case-study\/eutrophication-assessments\/","title":{"rendered":"Citizen Science in Environment Agency’s eutrophication assessments"},"content":{"rendered":"\n
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Bringing citizen science into the evidence base<\/h3>\n\n\n\n

The Environment Agency\u2019s Eutrophication Assessment Weight of Evidence (WoE) Tool<\/em> is a decision support tool<\/strong> used by the Environment Agency to assess where rivers are suffering from eutrophication and to guide where further evidence or action is needed.<\/p>\n\n\n\n

Through a collaboration between the Environment Agency and CaSTCo, partners have illustrated that citizen science data can potentially make a measurable difference<\/strong> to how this tool works in practice: improving confidence, refining local priorities, and helping regulators and communities focus efforts where they matter most.<\/p>\n\n\n\n

This case study explores how the approach worked in practice in the Ribble catchment, what changed when citizen evidence was added, and the huge potential for scaling this collaboration. It also sets out key recommendations for how the next version of the tool could routinely include citizen science data.<\/p>\n\n\n\n

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