Gunnison Tunnel in western Colorado was longest irrigation tunnel in the world when it was built

Name: Gunnison Tunnel in western Colorado was longest irrigation tunnel in the world when it was built
Uploaded: 2026-06-03T17:00:00-0600
Duration: 4 min 22 s
Description: CBS Colorado is celebrating Colorado's 150th birthday with the history of the Gunnison Tunnel, an engineering marvel that allowed for the Uncompahgre Valley to become the agricultural land that it is today.

CBS Colorado is celebrating Colorado's 150th birthday with the history of the Gunnison Tunnel, an engineering marvel that allowed for the Uncompahgre Valley to become the agricultural land that it is today.