Creek ecology conclusion The question that was investigated was, “what was the quality of the water in the U-high creek based on the macroinvertebrates found in the creek?” The purpose of this lab was to determine whether the water quality was good or bad, based on the type and number of organisms found living in the creek. One way data was collected was by observing the creek to make an original hypothesis to be proved right or wrong later. Another way was when soil, water, and algae samples were collected from the creek. The day after the samples were collected, each group sifted through the samples to find the amount and types of organisms living in the creek. The original hypothesis was, that the quality of the water was fair in the creek