Photos and videos: Hanging Flume and Dolores River

This page features photos and drone videos of the Hanging Flume above the Dolores River in southwest Colorado.

Built from around 1888 to 1891 (sources vary), the flume transported water from the San Miguel River for use in placer mining for gold on the Dolores, four miles downstream from its confluence with the San Miguel.

For around 10 miles, the flume is attached to sheer sandstone cliffs above the San Miguel and Dolores. Using local materials, an estimated 25 men worked on the project, considered an engineering marvel for its time.

Carrying tens of millions of gallons of water per day, the flume only dropped about 90 feet along its route. At its terminus, the water passed through smaller and smaller nozzles to generate the high pressure needed to wash sediment through sluice boxes in hydraulic mining.

The flume operated for three years but failed to yield much gold, leading the company that built the project to go out of business. The flume was later used for irrigation “then abandoned, looted and scavenged for timber and other resources,” according to

Only a portion of the flume remains and the ruins have been listed on the National Register of Historic Places, as well as on Colorado Preservation Inc.’s Most Endangered Places list.

Learn more:

DateSeptember 27, 2020
LocationHanging Flume Overlook in Montrose County, Colorado (map)
PhotographerMitch Tobin
OrganizationThe Water Desk at the University of Colorado Boulder
RightsFree to reuse under Creative Commons license, with credit to Mitch Tobin, The Water Desk

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