The Las Animas River is a river located in southern Colorado, flowing through Las Animas County. It is a tributary of the Arkansas River, contributing to the region's water system. The river is approximately 50 miles long and is known for its scenic landscapes and recreational opportunities. The river's watershed supports various wildlife and plant species, making it an important ecological area. It also plays a role in local agriculture, providing irrigation for farms in the surrounding areas. The Las Animas River is a vital resource for both the environment and the community.