Rock River Kayaking Guide: Launches, Dams & Flows
Upper Peninsula Paddle Guide
Wild Rivers. Rugged Trails. Real Adventure.
River History
The Rock River takes its name plainly — this is a river that cuts through rock. It rises in the forested highlands of southern Alger County and runs north through the Rock River Canyon Wilderness, a 4,640-acre roadless unit of the Hiawatha National Forest created by Congress in 1987. The river carved two narrow sandstone canyons about 150 feet deep, and at Rock River Falls it drops 15 feet over Jacobsville Sandstone into a small pool. The surrounding forest was clear-cut between about 1880 and 1930, and the second-growth hardwoods and conifers you see today grew back over the slash and burn scars of the logging era.
The U.S. Geological Survey evaluated the canyon country for minerals in the 1970s (Bulletin 1549) and found no significant metallic or nonmetallic deposits — only stone, sand and gravel of small economic value. The small community of Rock River grew near the river's mouth in Onota Township, where M-28 crosses toward Au Train Bay. The Eben Ice Caves, a popular winter attraction where seeps freeze into ice formations along the canyon rims, lie just south of the wilderness near Eben Junction. There are no dams on the Rock River, and no designated paddling route has ever been published for it.
Interactive River Map
Tap a pin for details. Pinch or use the + / – buttons to zoom.
- Launch / take-out
- Dam / portage
- USGS gage
- Camping
Pins marked (approx.) are approximate — confirm exact launch spots before a club trip.
River Overview
Headwaters
The Rock River rises in the forested uplands of southern Alger County, south of Chatham, and runs north about 17.5 miles through the Rock River Canyon Wilderness of the Hiawatha National Forest. In the wilderness it drops through two steep sandstone canyons roughly 150 feet deep, joined by its tributary Silver Creek, before easing across the coastal plain to its mouth.
Major Tributaries
- Silver Creek (through the second canyon)
Communities
- Chatham (south of the wilderness)
- Eben Junction (nearby, winter ice caves)
- Rock River (village at the mouth)
- Au Train (west of the mouth)
Landmarks
- Rock River Canyon Wilderness (4,640 acres)
- Rock River Falls (15 ft)
- Ginpole Lake (13 acres)
Mouth
Lake Superior at Au Train Bay, at the village of Rock River in Onota Township, Alger County.
USGS Flow & Water Conditions
Known USGS Station (historical only)
- Station
- 04044630 — Rock River at State Hwy 28 near Au Train, MI
- Location
- M-28 crossing near Au Train, Alger County
- Data Type
- Field measurements only, 1960–1972
- Status
- No continuous or live data — station discontinued
There is no live gage on the Rock River. Paddlers must judge water levels by visual scouting and recent rainfall; snowmelt and heavy rain are the only reliable windows.
USGS Interactive Map
Explore every USGS stream gage on and near the river. Tap a site for live flow and gage height.
Water-Level Considerations
| Level | What to Expect |
|---|---|
| Too Low | Verify locally |
| Good | Verify locally |
| High | Verify locally |
| Dangerous | Verify locally |
No published paddling flow ranges exist for the Rock River. Do not attempt the canyon reach without scouting it at current water levels on foot first.
Typical Water Temperature
- Spring (snowmelt)
- Near-freezing to ~40°F — full cold-water gear required
- Summer
- Cold, likely 55–65°F
- Fall
- Dropping fast; drysuit weather by October
Paddling Character
Section Character
The upper river above the wilderness is small, brushy headwater stream — likely too tight to paddle. Through the Rock River Canyon Wilderness the river drops through two sandstone canyons about 150 feet deep, with Rock River Falls (15 feet) as a hard barrier mid-wilderness. Canyon walls, undercuts and sieves in friable sandstone make this expert-only water with mandatory portages around every drop. Below the wilderness the river eases toward Lake Superior, ending in cold, open water at Au Train Bay.
Potential Hazards
Michigan Water Trails
Not a designated water trail. The Rock River has no listing on michiganwatertrails.org. Its mouth at Au Train Bay connects with the Hiawatha Water Trail, the 120-mile Lake Superior shoreline route from Big Bay to Grand Marais.
Dams & Portages
No dams exist on the Rock River — the barriers are natural: Rock River Falls (15 feet) and the steep canyon drops. Portage around every waterfall and unrunnable drop; scout on foot before committing.
Public Kayak & Canoe Launches
No developed public kayak or canoe launches are documented on the Rock River. The only realistic access is at road crossings near the mouth. All access below is approximate — confirm before a club trip.
| Launch | River Mile | GPS | Parking | Restrooms | Fee / Pass | To Next Launch |
|---|---|---|---|---|---|---|
| M-28 at village of Rock River (mouth) | ~0 | 46.4633, -86.9154 (approx.) | Roadside | None | None | Lake Superior — open water |
| Rock River Rd / forest road crossings (upper) | ~10–14 | Verify locally | None | None | None | Verify locally |
No established put-ins, take-outs or portage trails are published for this river.
Camping
Rock River Canyon Wilderness
- Area
- Mid-river, Hiawatha National Forest
- Type
- Primitive backcountry only
- Rules
- Federal wilderness rules apply — no motorized equipment; group size limits; Leave No Trace
Hiawatha National Forest (general)
- Area
- Surrounding the wilderness
- Type
- Dispersed camping + developed campgrounds
- Reservations
- Developed sites via recreation.gov; dispersed follows forest rules
Nearby developed options include the Hiawatha National Forest campgrounds around Munising and Au Train (Bay Furnace, Au Train) — confirm current status and reservations before traveling.
Wildlife & Fishing
- Fishery
- Northern pike, coho salmon, brook trout, brown trout and rainbow trout are documented in the Rock River and Silver Creek (wilderness sources).
- Regulations
- Check the current Michigan DNR fishing guide for trout stream rules and seasons before fishing.
- Consumption
- No river-specific MDHHS Eat Safe Fish advisory found for the Rock River — statewide mercury guidance applies. Check the current guide at michigan.gov/eatsafefish before keeping fish.
Safety
Required / Recommended Gear
River-Specific Concerns
This is a roadless wilderness canyon river with no documented paddling route. Rock River Falls and the canyon drops are unrunnable without expert whitewater skills and a full portage plan. The sandstone is friable — undercuts and collapsing banks are a real hazard. Expect no cell coverage in the wilderness; carry a satellite communicator and leave a detailed trip plan with someone on shore.
- Nearest Hospital
- Munising Memorial Hospital, 1500 Sand Point Rd, Munising, MI — 906-387-4110
- 911 Location Tips
- There are no addresses in the wilderness. Carry a GPS/satellite device and note the nearest road crossing (M-94 to the south, M-28 to the north) for any emergency call.
Best Time & Access
- Spring
- Snowmelt is the only plausible paddling window — cold, high, fast water. Full cold-water gear mandatory.
- Summer
- Likely too low to paddle; the canyon reach becomes a hiking destination.
- Fall
- Low water; color season hiking to the falls.
- Winter
- Paddling season over; the Eben Ice Caves nearby are a winter hiking attraction.
- Best Months
- Late April – May (snowmelt), if attempting at all
Access & Regulations
- Wilderness Rules
- Rock River Canyon Wilderness is federally designated — no motorized equipment or mechanized transport; group size limits apply. Check current Hiawatha National Forest wilderness rules.
- Recreation Passport
- Not required on National Forest land; Michigan state parks and state forest campgrounds elsewhere require the Recreation Passport or a vehicle permit.
- Hunting Seasons
- The wilderness is open to hunting — wear blaze orange during firearm deer season (typically Nov 15–30). Check the current Michigan DNR hunting digest.
- Livery / Shuttle
- No livery or shuttle service is known on this river — arrange private shuttles only.
Trip Planning
- Day Trip
- Hike to Rock River Falls from the FR 2293 trailhead (about a mile each way) — the realistic way to experience this river.
- Overnight
- Backcountry camping in the wilderness or at a Hiawatha National Forest campground near Munising/Au Train.
- What to Pack
- Standard paddling safety kit plus whitewater helmet, satellite communicator, full repair kit, and cold-water gear — there is no help nearby.
- Leave No Trace
- Pack out everything; wilderness rules prohibit damaging the fragile sandstone — rock climbing is discouraged because the cliffs crumble.
- Clean Drain Dry
- Clean, drain and dry all boats and gear between waterways to stop aquatic invasive species.
River Difficulty
Class I
Class I (not listed by American Whitewater) — easy moving water, small riffles, few obstructions.
Ratings rise at high water — check the USGS gage before paddling. American Whitewater
Quick Reference
- River
- Rock River (Alger County)
- Length
- ~17.5 mi
- Region
- Central Upper Peninsula
- Headwaters
- Southern Alger County, south of Chatham
- Mouth
- Lake Superior at Au Train Bay
- Tributaries
- Silver Creek
- USGS Gage
- 04044630 (historical field measurements only — no live data)
- Best Season
- Spring snowmelt (verify locally)
- Difficulty
- Class I
- Best Section
- Hike to Rock River Falls (paddling route undocumented)
- Major Hazards
- 15-ft falls, canyon walls, remoteness, cold Lake Superior
- Dams/Portages
- 0 dams — portage all waterfalls and drops
- Water Trail
- No
Sources
- USGS 04044630 — Rock River at State Hwy 28 near Au Train, MI (historical)
- USGS Interactive Water Data Map
- Rock River (Lake Superior) — river length and course
- Rock River Canyon Wilderness — designation, canyons, falls, fish and wildlife
- USGS Bulletin 1549 — Mineral resources of the Rock River Canyon Wilderness Study Area
- Rock River Falls — access directions
- Michigan Water Trails — Upper Peninsula trails
- Michigan DNR
Last updated: October 2026. Water levels, hazards, launches, camping rules and closures change. Verify current USGS flow, weather, river conditions, access and regulations immediately before launching.
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