| Difficulty | IV |
| Length | 6.2 mi |
| Avg Gradient | 136 fpm |
| Gauge | Boulder Creek Near Orodell, Co. |
| Flow Rate as of 13 hours | 35 cfsbelow recommended |
| Reach Info Last Updated | July 17, 2026 |
The Lower Boulder Canyon / Blue Bridge section on Boulder Creek is one of the best class IV creeks in the front range when it has water. The general character is read-and-run class IV singletrack kayaking. It is shallow and rocky, so when in doubt, keep it straight! New wood is common at the beginning of every season, so it's best to scout or talk to some locals before the 1st lap. Runoff on Boulder Creek is often delayed compared to other runs in the area, since Barker Reservoir in Nederland must fill and spill before seeing natural runoff flows. In a typical June, it will run at medium flows for at least 2-3 weeks, so if it's running, it's worth checking out.
Start by putting in at the large road pulloff just downstream of the Blue Bridge crossing Boulder Creek (about 6 miles upstream of Eben G. Fine park). There is a sign in the lot referencing the Black Tiger fire. Once you pass under a small bridge 100 yards below the putin, be ready for the action to begin. The next mile is continuous read-and-run class IV singletrack kayaking. Before putting on (at least early in the season), it’s always good to scout this top section for wood, as a misplaced log can be troublesome.
Roadcut: After about 1.25 miles, you will come to Roadcut rapid, which is marked by the Boulder Canyon highway cutting through a large piece of the canyon wall. It is routine to scout this rapid, since wood tends to collect here. The top section is run center moving left before 2 options become available on either side of a large pyramid rock in the center of the creek. The commonly run left side requires a boof over a large pourover just left of the pyramid rock, and then quickly moving back to river right to avoid a rock jumble. The right side has a slot just right of the pyramid rock which lines up perfectly with the exit, but the current here is pushy and it’s common to get flipped off the river right wall.
In about 1/2 mile, you will co
...Putin is located in a large gravel parking lot 100 yards downstream of the Blue Bridge. There is a large sign referencing the Black Tiger Fire and also a bus stop in this lot.
Roadcut rapid is marked by the Boulder Canyon highway cutting through a large piece of the canyon wall. It is routine to scout this rapid, since wood tends to collect here. The top section is run center moving left before 2 options become available on either side of a large pyramid rock in the center of the creek. The commonly run left side requires a boof over a large pourover just left of the pyramid rock, and then quickly moving back to river right to avoid a rock jumble. The right side has a slot just right of the pyramid rock which lines up perfectly with the exit, but the current here is pushy and it’s common to get flipped off the river right wall.
Just below a small single-lane bridge is a 6 ft ledge that is run center left to avoid landing on sharp rocks on river right. A delayed boof is nice here!
Dam slide. After some more class IV read-and-run, you will come to the Boulder Canyon Hydroelectric Facility. A river wide horizon line presents itself just next to the power plant. This slide is best run about 6 ft off the river-right wall.
This is a great access point for the bottom 2 miles of the run.
This is a great access point for the lower 1.5 miles of the run.
Elephant Buttress. This is the highlight of the run. It was changed in 2019 due to construction and rock slide work on the Boulder Canyon highway, and there is still a debate about which Buttress rapid is better. However, the current rapid is fun, big, and exciting! It consists of 3 drops and then a very long, shallow runout. The 1st drop is typically run center left, and it’s best to be in control as the 2nd drop comes up quickly. The 2nd drop is a 6 ft ledge commonly run down the far left side utilizing a flake to boof over the hole. The center line can be run at higher flows with a good boof, but be wary of the right side, as the hole is backed up by a large rock. The 3rd drop can be run down the center, and be ready to hang on as the runout is fast (so keep it straight). Flips and swims here have resulted in injuries and broken boats, so roll quickly. Or better yet, stay upright! At the bottom of the runout, there is a flake boof on river right. If the rock is covered, it’s good to go!
Takeout on river right in Eben G. Fine Park or continue another mile of so to the Boulder Justice Center just downstream the 6th street bridge. This park once hosted a whitewater course, and the features are all manmade. Enjoy the sights, sounds, and smells of the local youth as you float and surf your way through the park.
