The Animas River is a 126-mile-long river located in the southwestern United States, primarily flowing through Colorado and New Mexico. It originates in the San Juan Mountains and eventually joins the San Juan River. The river is known for its scenic beauty and recreational opportunities, including fishing, rafting, and kayaking. The Animas River runs through several towns, including Durango, where it serves as a vital water source and a popular destination for outdoor activities. The river's watershed is also important for local ecosystems and wildlife, supporting various species along its banks.