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          Step 4: Assess your results

           
          After you complete the River/Stream Study Field Trip, it's time to analyse the data you collected and to draw conclusions about the quality of your water source.

          The EcoSpark protocols use ten indices to determine whether your river/stream is "potentially impaired" or "unimpaired." The aggregate approach allows for a more accurate preliminary conclusion.

          EcoSpark makes it easy for you to calculate the ten indices. You can use either of the resources below depending upon your time constraints or your students' skill-levels. Choose from:


          Data Analysis Calculator (in excel form) which will automatically calculate the health of your stream based upon the benthos (bugs) you found Data Analysis Calculator Thumbnail
          Data Analysis Calculator (online version) which will automatically calculate the health of your stream based upon the benthos (bugs) you found Data Analysis Calculator Thumbnail
          Data Analysis Handout which will allow you and your students to manually calculate the health of your stream based upon the benthos you found Data Analysis Handout Thumbnail

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