Yale Center for Geospatial Solutions supported the visualization and communication of research on ephemeral and non-ephemeral stream networks by creating maps that show how small upstream streams contribute to larger river systems and drinking water supplies. Building on watershed models developed for a study published in Science, YCGS helped translate complex hydrological data into accessible, place-based maps of rivers and watersheds across Iowa, West Virginia, Utah, South Carolina, and Arizona. These visuals highlight how headwater and ephemeral streams, although often small or seasonally flowing, can play a significant role in downstream water quality and public drinking water systems. Through this work, YCGS helped make scientific findings more understandable and actionable for partners, policymakers, and the public.
Mapping Ephemeral Stream Contributions to U.S. Watersheds
