News Deeply –
The San Miguel and Dolores rivers are both southwestern Colorado waterways that begin high in the San Juan Mountains.
Both carve through narrow, red sandstone canyons. Eventually, the two rivers become one when the San Miguel merges into the Dolores and the Dolores with the Colorado River in eastern Utah.
But there is one major difference: The Dolores is dammed at McPhee Reservoir near the town of Dolores, while the San Miguel is one of the last free-flowing rivers in the West.
A study of plant traits on these two rivers may provide clues about how riparian habitats will respond to climate change, not just in southwestern Colorado, but across the state and the West.