Kmusser. "Map of the Rio Grande and Its Tributaries within the Rio Grande Drainage Basin." 18 August 2010. Digital map. Description: The map displays the Rio Grande and its tributaries within the Rio Grande drainage basin, situated in northeastern Mexico and the southwestern/south-central United States. Source: Own work. Data sources include elevation data from SRTM, drainage basin from GTOPO, U.S. stream data from the National Atlas, and other features from Vector Map.