The Dolores River is a river located in the southwestern United States, primarily flowing through the state of Colorado. It is approximately 257 miles long and is a tributary of the Colorado River. The river originates in the San Juan Mountains and travels through scenic landscapes, including canyons and valleys, before joining the Colorado River. The Dolores River is known for its recreational opportunities, including fishing, rafting, and kayaking. It also supports diverse ecosystems and wildlife habitats. The river is an important water source for local communities and agriculture, contributing to the region's economy and natural beauty.