Sam Learner created the River Runner map to visualize the journey of raindrops through the United States' waterways, illustrating the interconnected nature of watersheds and the impact of human activities on downstream ecosystems. Utilizing USGS data and Mapbox's 3D features, Learner designed an immersive experience that allows users to trace the path of water from their backyard to the ocean, highlighting the topography and communities along the way. The project involved overcoming technical challenges related to camera control, speed, and elevation to ensure a smooth and comprehensible visualization. By showcasing the flow paths of rivers and streams, the tool aims to increase awareness and urgency around the protection of waterways, emphasizing the importance of understanding watersheds. The development was supported by various tools and data from USGS, Geoconnex, and Mapbox, with hopes to expand the project globally.