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ANALYSIS

Analyzing and monitoring the stream is very important.  The data collected will determine how healthy the stream is.  The data will show what type of factors (natural and unnatural) are affecting the stream in a positive and negative way.  From these results it can be determined what needs to be changed or addressed in order to improve the stream's quality.

 

  • 14 out of 14 days the pH level was IN optimal range (100%)

          - stream has healthy acidity level of water for the aquatic species

  • 5 out of 14 days the Dissolved Oxygen level was IN optimal range (36%)

          - there's not enough oxygen for the aquatic species b/c over half of the days data was collected the D.O. levels were                       outside of optimal range

  • 10 out of 14 days the Transparency level was IN optimal range (71%)

         - indicates the levels of erosion (pollution) and levels of dissolved oxygen

  • 5 out of 14 days the temperature level was IN optimal range (36%)

         - indicates temperature consistency - fluctuation in temp. is bad for aquatic animals

         - indicates how much dissolved oxygen water can hold

  • 5 out of 14 days the precipitation level was IN optimal range (36%)

        - the overall water quality of the stream needs ot be improved because less than 50% of the time data was colled did it fall                into the optimal range

  • 1 out of 14 days the Nitrate level was IN optimal range (7%)

          - too much Nitrate = over growth of aquatic               plants, thus changes the types of plants in               the stream

           - outside of optimal range indicates too                    much animal waste (poop) or fertilizers,                    thus chemical pollution of stream

  • 1 out of 14 days the Phosphate level was IN optimal range (7%)

           - too much Phosphate = plant overgrowth,                 algae bloom, & death of aquatic animals

  • 0 out of 14 days the Alkalinity level was IN optimal range (0%)

            - the stream does not have the ability to                   neutralize acidic pollution from rainfall or                 wastewater

  • 4 out of 17 days the Nitrate level was IN optimal range (23%)

  • 4 out of 17 days the Alkalinity level was IN optimal range (23%)

  • 15 out of 17 days the pH level was IN optimal range (88%)

  • 3 out of 17 days the Dissolved Oxygen level was IN optimal range (18%)

  • 10 out of 17 days the transparency level was IN optimal range (59%)

  • 4 out of 17 days the temperature level was IN optimal range (23%)

  • 5 out of 17 days the percipitation level was IN optimal range (29%)

Waikakalaua Stream quality change over time:

 

  • Overall, the stream's health has improved from 2013-2014 b/c

        - in 5 out of the 7 categories the % of times that               the data collected feel IN the optimal range was               greater in 2014 than 2013

  • EVENTHOUGH, the data increased, the % of times that the data has fallen into the optimal range is still low b/c majority of the %;s are still under 50% which is half of the time

  • our data vs. historical findings (Centerl Oahu Watershed Study)

        - the Centeral Oahu Watershed Study found that                the primary threats to stream habitats are:

            - Stream channelization

            - Water pollution

            - Reduced stream flow

            - Non-native species

      - Our data found that the primary threats to                  stream habitats are:    

               - water acidity

               - runoff of animal waste , erosion, and                           fertilizers or other household chemicals

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