In this activity, students utilize their understanding and feel for flow rate from the Faucet Flow Rate activity to estimate the flow rate in a local river. The objective is for students to relate laboratory experiment results to the environment. Students will then use the Engineering Our Water Living Lab (accessible through TeachEngineering.com) to determine the actual flow rate data for their chosen river. They will compare their estimate with the actual flow rate. Note: for this activity to be successful, it is critical for the students to have a visual feel for the flow of a nearby river.