'A Day in the Life of the Hudson River'

Event Parameters

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What parameters do we measure?

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Water Chemistry

Water chemistry is a controlling factor in the amount and types of fish, macroinvertebrates and even plants that will be able to thrive and exist in a given section of the river. Water chemistry is impacted by adjacent land uses, tides and currents, time of day, time of year, type of substrate and interactions between these variables as well as other more subtle factors. Students should make the chemical measurements, gather the data and then analyze and discuss what it means. Pose questions to each other...Why is this important? Does it have an impact on other things we have noticed today? What might have had an impact on this reading? Would we expect this reading to change it we checked it again in an hour...3 hours...6 hours?

Source of chart: http://waterontheweb.org/under/waterquality/oxygen.html