Hikers and anglers find Union Bay Campground positioned along Lake Superior's rocky shoreline within Porcupine Mountains Wilderness State Park. This established campground offers 100 electric sites arranged across three terraced levels, with lakefront spots booking up to six months in advance and upper-level sites providing more wind protection from Superior's powerful gusts.
The campground's layout creates distinct camping experiences depending on site selection. Waterfront sites sit directly on the rocky Lake Superior shore but offer less privacy between neighbors, while the upper terraced sites provide grassy camping with more tree coverage. Neil T. stayed at site 61 "steps from the lake" and noted it was "not a deep spot, but big enough for us and had trees on three sides." Several campers report flooding concerns in lower sites during storms, making site selection important for tent campers.
Modern amenities include individual shower rooms with exterior access, laundry facilities, and water spigots throughout the campground. A boat launch sits adjacent to the entrance with dock access for Superior fishing. The campground features a playground, camp store selling firewood and basic supplies, and a game hut stocked with activities. Rangers offer daily programming during peak season, and the nearby visitor center provides trail maps and backcountry permits.
Access requires navigating rough park roads, particularly challenging in wet conditions. Cell service remains spotty with Verizon users reporting intermittent coverage. The closest full services are 18 miles away in Ontonagon, making advance supply planning essential. Melissa M. recommends filling water tanks before entering and notes "flys were not bad when it was windy" but suggests bringing fans for still evenings.
Reserve lakefront sites well ahead for summer visits, or consider shoulder seasons when the campground offers more solitude and availability.
Description
Union Bay-Porcupine Mountains State Park is home to a seasonal campground that is available to visit from mid May to mid October. With a limited window of time, it’s well worth planning your trip in advance, as peak season can bring a gaggle of campers and tourists, making priority campsites difficult to find. The initial weeks of August are almost always packed, thanks to kids and college-students trying to camp before school starts again.
Subsequently, if you want smaller crowds but still want to enjoy the sun, try to reserve a spot during the latter end of August. This is also when the Porcupine Mountains Music Festival happens, giving you a great event to check out. Regardless of your needs, during camping season you can call the campground where staff will provide details on sites that you might not see at the Reservations Center or online. If you can’t find what you’re looking for online, give them a call!
If you happen to forget a thing or two, there’s the Porcupine Mountain Outpost store right outside the entrance to the campground. It's open from May through mid October. There you can find souvenirs, camping supplies, and even clothing. You might find the occasional pre-made sandwich, but besides soft drinks and milk, there are no real groceries here. You’ll have to travel all the way out to Ontonagon (25 miles away) for groceries. That said, you can make the trip worth if you if you grab a bite to eat at Syl’s, a legendary diner famous for its repertoire of comfort food classics.
The campground itself is moderately sized, with 99 sites available for RVs and tents. One of the draws to the campground is that all sites have at least 30 amp electric hookups available. One of the most common complaints here is due to the limited amount of pull-through sites, with many options too small to accommodate larger vehicles.
Porcupine Mountains State Park is uniquely known for its hybrid existence between contemporary and antiquated beauty. The park is extremely modern, thanks to the updated facilities and well maintained grounds. However, it skirts the line with a true wilderness feel, owing to the rustic touches, and charming yurt cabins, available for overnight accommodations as well. Whatever your intent to visit, there’s no mistaking the quant appeal of this Michigan state park.
RV Road Trip Guides
Map & DirectionsUnion Bay Campground is located in Michigan near White Pine
Address
412 South Boundary Rd
Ontonagon, MI 49953
Coordinates
46.82178004 N
89.63897867 W
Connectivity
- T-MobileNo Coverage
- VerizonLTEGood CoverageVerified by 11 usersLast on 6/22/26
- AT&TNo CoverageVerified by 8 usersLast on 6/22/26
Connectivity
- T-MobileNo Coverage
- VerizonLTEGood CoverageVerified by 11 usersLast on 6/22/26
- AT&TNo CoverageVerified by 8 usersLast on 6/22/26
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
Site Types
- RV Sites
- Standard (Tent/RV)
- Group
- Cabins
- Tent Cabin
Features
For Campers
- Trash
- Firewood Available
- Phone Service
- Reservable
- Showers
- Drinking Water
- Electric Hookups
- Toilets
- Alcohol
- Fires
For Vehicles
- Sanitary Dump
- Sewer Hookups
- Pull-Through Sites
- Big Rig Friendly
Drive Time
- 2 hrs 39 min from Wausau, WI
- 2 hrs 53 min from Duluth, MN
- 3 hrs 50 min from Green Bay, WI
- 3 hrs 55 min from Eau Claire, WI
































































