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Cochrane Dam on the Missouri River

Cochrane Dam will be open for public crossing on June 18

Date: Jun 18, 2022

TYPE: Event

Cochrane Dam, located on the Missouri River outside of Great Falls, will be open to bicyclists and hikers to cross the river on Saturday, June 18, from 9 a.m. to 3 p.m.

Cochrane Dam can be accessed via:

 Lewis & Clark Trailhead

  • A 3.6 mile hike/ride starting on the paved trail going towards the crooked falls overlook and then following the marked trails to the dam.  Trail is moderate in difficulty. 
  • A 3.5 mile hike/ride following the marked trails the entire way.  This is a dirt single track trail and features rolling hills and an elevation change of 300-400 feet.  Trail is moderate in difficulty.

Rainbow Trailhead

  • A 2.5 mile hike/ride from Rainbow Trailhead on the gravel service road, with rolling hills and 100-200 feet of elevation change.  This road is traveled on by NorthWestern Energy vehicles, please travel single file and stay to the right to stay out of their traffic. 
  • A 3.7mile hike/ride from Rainbow Trailhead onto the River’s Edge trail, with 300-400 feet of elevation change, rolling hills and some single-track spots.  Please be mindful of other trail users, take turns and descents slowly. 

This event is subject to change. For more information contact Giant Springs State Park at 406-727-1212 or email emma.gaylo@mt.gov