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Gunnison Tunnel GP

Important Note:

In 2020 a locked gate was placed near the west portal (west of the canal dipper) which prevents running the complete trail. The trail can be run from the Uncompahgre River east to the gate but you can not reach the west portal. If you want to see the west portal and the canal dipper you must enter this trail from Hwy. 50.

The Gunnison Tunnel is a 5.8 mile irrigation tunnel constructed between 1905 and 1909 by the Bureau of Reclamation to divert water from the Gunnison River to the Uncompahgre . At the time of its completion, it was the longest irrigation tunnel in the world.  It only runs water during the irrigation season.

The tunnel's West Portal opens up into the South Canal which both produces hydroelectric power and delivers water as part of the Uncompaghre Project.  The South Canal extends from the end of the Gunnison Tunnel generally southwest 11.4 miles to the Uncompahgre River. Part of the canal is concrete lined and part is unlined.  

The South Canal includes 3 additional tunnels, 3 hydroelectric stations and numerous branch canals.  This trip takes you along the upper part of the canal so you can see the lined and unlined portions, the tunnels and the hydroelectric stations.  A short trip that can be done by most vehicles.

This canal dipper, for lack of a better term, rotates counterclockwise by canal current.  The barrels pick up water and spill it into a trough.   A pipe drains water from the trough into a small irrigation ditch.  Just a short distance from US 50 at the north end of this trail.

There is a GPS - GPX track at the bottom of this page.
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Canal dipper
The West Portal of the Gunnison Tunnel emerges quite a bit below the natural surface of the ground.  The canal drops 350' on its journey to the Uncompaghre, and this drop is harnessed to produce electricity.
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West Portal
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Hydroelectric station
Hydroelectric stations absorb some of the elevation drop, but the rest is simply water running downhill.  Small elevation drops are handled differently than large elevation drops.
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Small elevation drop
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Large elevation drop
Some of the canal is lined and some is unlined.
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Lined canal
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Unlined canal
There are 3 tunnels included in South Canal. The canal road leaves each tunnel entrance then climbs the hills and drops back down to the tunnel exit.
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Climbing from tunnel entrance
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Tunnel exit
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Climbing from tunnel entrance
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Tunnel exit
This track follows less than half of South Canal's length then heads for Montrose.  There is no public access to the canal road south of this point.

​Updated 2018.

Picture

gunnison_tunnel_gp.gpx
File Size: 59 kb
File Type: gpx
Download File

  • Jeep The USA
  • Trails
    • Arizona Jeep Trails >
      • Apache Junction Jeep Trails
      • Kingman Jeep Trails
      • Lake Havasu - Parker Jeep Trails
      • Phoenix to Flagstaff Jeep Trails
      • Quartzsite Jeep Trails
      • Tucson - Benson Jeep Trails
    • California Jeep Trails >
      • Death Valley
    • Colorado Jeep Trails >
      • Breckenridge Jeep Trails
      • Buena Vista Jeep Trails
      • Grand Junction Jeep Trails
      • Montrose Jeep Trails
      • Silverton - Ouray Jeep Trails
    • Nevada Jeep Trails >
      • Las Vegas Jeep Trails
      • Mesquite Jeep Trails
    • New Mexico Jeep Trails >
      • Elephant Butte Jeep Trails
      • Las Cruces Jeep Trails
    • South Dakota Jeep Trails >
      • Black Hills Jeep Trails
    • Texas Jeep Trails >
      • Big Bend Jeep Trails
    • Utah Jeep Trails >
      • Blanding Jeep Trails
      • Green River -Hanksville Jeep Trails
      • Moab Jeep Trails
      • Page - Escalante - Kanab Jeep Trails
      • Saint George Jeep Trails
    • Wyoming Jeep Trails >
      • Bighorn Mountains Jeep Trails
      • Lander Jeep Trails
  • Difficulty Ratings
  • Use GPX
  • Interactive map Tutorial