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surface water(4)
carbon(2)
wetlands(2)
acid deposition(1)
alkalinity(1)
carbonate(1)
conductivity(1)
contaminants(1)
coral reefs(1)
hydraulic conductivity(1)
lead(1)
minerals(1)
nutrients(1)
organic carbon(1)
organic matter(1)
pesticides(1)
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surface roughness(1)
topography(1)
turbidity(1)
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