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    • Clinton River
      • Health
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        • Clinton River
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    • Detroit River
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    • Guanabara Bay
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    • Huron River
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    • Lake Erie
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        • Total Phosphorus
        • Dissolved Phosphorus
        • Total Nitrogen
        • Nitrate + Nitrite
        • Chlorophyll a
        • Walleye
        • Yellow Perch
        • Emerald Shiner
        • Bloom Index
        • Source Water Toxin
        • Recreational Toxin
        • Total Suspended Solids
        • Fish
        • Macroinvertebrates
        • Habitat Quality
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      • Lake Regions
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    • Orinoco River
      • Health
      • Indicators
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    • Rio Grande
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    • Rouge River
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        • Rouge River
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    • Southeast Michigan
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    • Sudbury, Assabet, & Concord Rivers
      • Health
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        • Floating Biomass
        • Streamflow Alteration
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        • Visual Quality
        • Cultural Importance
        • Impervious Cover
        • Aquatic Connectivity
        • Ecological Integrity
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        • Trails
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      • Regions
        • Upper Sudbury River
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    • Verde River
      • Health
      • Indicators
        • Overall Health Index
        • Base Flow
        • Surfacewater BMPs
        • Groundwater BMPs
        • Water Quality Index
        • Water Quality Certainty
        • Turbidity
        • Macroinvertebrates
        • Upland Condition Index
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        • Fish
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      • Regions
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        • Oak Creek
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        • Lower Verde
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    • Willamette River
      • Health
      • Indicators
        • Overall Health Index
        • Water Quality Index
        • Toxics
        • Temperature
        • Native Fish
        • Non-native Fish
        • Juvenile Chinook
        • Bald Eagle
        • Channel Complexity
        • Floodplain Forest
        • Flow Targets
        • Peak Flows
        • Fish Consumption Advisories
        • Tribal Fisheries
        • Fecal Bacteria
        • Harmful Algal Blooms
      • Regions
        • Upper Willamette
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        • Lower Willamette
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