The Animas watershed (HUC 14080104) spans approximately 3,310 square miles in southwestern Colorado and northwestern New Mexico. The basin is characterized by a semi-arid climate, with precipitation mainly occurring in the form of winter snowpack. The Animas River is the primary surface water source and is fed by various tributaries, including the Florida River and the Los Pinos River. The watershed also contains two major reservoirs, the Vallecito Reservoir and the Lemon Reservoir, which primarily serve as recreational areas. In recent years, the Animas River has been affected by mining activities, resulting in heavy metal contamination. Additionally, the basin has experienced drought conditions in recent years, further stressing the already limited water resources. Despite these challenges, efforts to improve water quality and conservation practices are ongoing.