Elevation: 771 ft
GPS: 42.08, -90.752 Google Map · Climbing Area Map
Page Views: 26,486 total · 548/month
Shared By: Alan Grau on May 30, 2015
Admins: J. Stark
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Bouldering area located at the Joinerville boat ramp along the Maquoketa River. Limestone boulders featuring solid rock and fun movement on a variety of boulders. Problems range from vertical highballs to steep, juggy problems and a few tall, proud lines with hard moves on steep limestone.

You can park along the road inside the park. Please park closer to park entrance/approach trail. This will free up parking near the boat ramp for boaters.
Joinerville overview map

The bouldering at Joinerville Park was independently discovered by John Anderson and Troy Davison, each of whom did some early, undocumented first assents in the park. In 2013 the Iowa Climbers’ Coalition approached the Jackson Country Conservation office about bouldering at Joinerville park. We were given the green light to begin bouldering at Joinerville. However, there caveat is that, if it turns into a problem, this could change.

Bolting and roped climbing are not allowed at Joinerville.

Getting There

Joinerville park is located along the Maquoketa river in Jackson Country. Take Highway 64 west from Maquoketa for 4 miles. Turn right on 123rd Avenue (look for the Joinerville Canoe Access sign) and go 2 miles North on 123rd avenue to the park entrance.

Joinerville Park is open from 6:00 am – 10:30 pm for day use year-round. Camping is allowed by special permit and board approval only.  Contact the Jackson Country conservation office for details.

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G Man  
So what's the development scene like - is there still more in the area to be developed, or has the potential pretty much already been tapped out? Dec 10, 2015
J. Stark
J. Stark   Iowa  
There's still plenty of unclimbed rock out here. Dec 12, 2015
AKSClimbs   Illinois/UAE
I had a great day here when I made a day trip here. Can't wait to return to see what has changed! Some big potential here! Jan 7, 2016
Is this area worth the drive from Des Moines? I'll be up there in a couple weeks, and this seems to be the only posted bouldering in the general vicinity. If anyone has other info than what's posted here, I'd love to hear from you! Mar 7, 2016
Drove from Ames last weekend and it was totally worth it.
Note: The access road to the park is not paved (it's about 1 mile from the highway to parking) and is at river level, likely chances of flooding after heavy rains, and it may stay flooded several days after a heavy rain. Mar 8, 2016
Am going to be doing a lot of developing this summer in this area as I will be living in the Quad Cities!

I am looking for help! I have helped develop a good amount of areas in Utah (Joes Valley, Ogden Bouldering) with university friends....

Would love to meet some others out there to help give this area a reputation!!! Apr 3, 2016
Development Update!

Some friends and I went down up to Joinerville last weekend to try and improve access and improve top-outs. We cleared out a significant amount of fallen trees, logs and dead brush from the trail around the boulders and the top-outs. A couple of the descents from up top were thoroughly cleaned up to improve their safety. There are also some primitive trails on top of the boulders now that lead to descents. Try to keep using them so they stay!

As far as route development is concerned, the top-outs of Dip Boulder, Freshman Boulder, Project Boulder(left slab), and the Alcove Boulder were cleaned off. As a result, some previously dangerous highballs are now safe, so come check them out. We need traffic to keep the routes clean. Nov 9, 2016