Near Sleepy Lion Trail
A hiker inspects the dam outlet into North St. Vrain Creek.
Near Sleepy Lion Trail
Heading up the steeper Switchback Trail on the side of the dam to the reservoir, keep your eyes peeled for lizards! (Photo taken when dogs were permitted, before 5/15/23).
Near Sleepy Lion Trail
If you get a chance, look down on the dam release into the creek. The mist is cool and refreshing on hot days.
Near Sleepy Lion Trail
Reservoir and dam
Near Sleepy Lion Trail
Button Rock Dam, Ralph Price Reservoir

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Driving Directions
Hike Trail

Sleepy Lion Trail

4.3 (20 Ratings)
A shaded, quiet variation through the forest.
1.9
mi
Distance
582
ft
Gain
moderate
Difficulty
River/CreekViewsWaterfall
Access Issues
As of May 15, 2023, no dogs allowed at Button Rock Preserve (more info here: https://www.longmontcolorado.gov/departments/departments-n-z/parks-open-space-and-trails/directory-of-parks-trails/button-rock-preserve).

Route Details

Flatter
Steeper
1.91mi
Distance
582ft
Elevation Gain
462ft
Elevation Loss
45%
Max Grade
6,635ft
High Point
6,106ft
Low Point
Path Type
Point to Point
Description
Turn left off the dirt road to start the Sleepy Lion Trail. A sign will indicate where it begins. The trail immediately starts climbing through pines. This area is called Deadman Gulch. Continue until reaching a really nice meadow, where you'll have views of RMNP. From there, keep on the trail as it continues gaining elevation. The trail will get a little bit rockier and then begin descending. You'll then see a sign for the Hall Ranch Open Space. Instead, continue to the right to stay on the trail. You'll soon see the reservoir to your right in the distance. Stay on the trail as it ascends some more and then begins descending. This section of the trail has some pavement on it. Soon you'll reach the base of the Ralph Price Reservoir and Button Rock Dam. A huge amount of water was being released from the dam when we were there and was spraying into the river. You can get up very close to the spray. Head back the way you came or head northeast on the Button Rock Dam Access and Longmont Dam Road for a nice loop.

Route Conditions

Report Conditions
Anonymous Adventurer
All Clear
Anonymous Adventurer
All Clear
Anonymous Adventurer
All Clear
Anonymous Adventurer
All Clear
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Contributors
David Kider