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#water pollution #agricultural runoff #fertilizer runoff #environmental hazard #eutrophication

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#maumee river #maumee watershed #agricultural runoff #river quality #great lakes basin #maumee bay

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#agricultural runoff #farm runoff #fertilizer runoff #pesticide runoff #nutrient pollution #water quality #nonpoint source pollution

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#agricultural runoff #farm waste #fertilizer runoff #pesticide runoff #water quality decline #nonpoint source pollution

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#agricultural runoff #atrazine contamination #water pollution pathway #amphibian decline #ecosystem effects