DOLORES RIVER BASIN
10,169 square miles.
The San Juan/Dolores Basin is located in the southwest corner of Colorado.Major tributaries include San Miguel River, Animas River, and La Plata River.
Largest cities/towns in the basin:
- Durango (pop. 15,213)
- Cortex (pop. 8,328)
4,390 ft (1,340 m)
Agricultural, mining, recreation, tourism, retirement/second home
- McPhee Reservoir – 381,100 ac-ft
- Vallecito Reservoir 129,700 ac-ft
- Lemon Reservoir – 40,100 ac-ft
Major Exports from Basin:
- San Juan Chama Project – 89,832 ac-ft (annual average diversion)
Source: Colorado Geological Survey– Groundwater Atlas