In this FACTivity, you will be the scientist and analyze real-time streamflow data from the three rivers that the scientists in this article studied. The question you will answer in this FACTivity is: How do the three graphs of data from the rivers studied by the scientists compare with each other? Then you will think about how these conditions might affect freshwater mussels. An extension activity is also included. Materials: Provided graphs Pencils Topics: Water, Analyzing Charts, Compare and Contrast, Freshwater Mussel, Graphing, Reading Data, Rivers and Streams.