Rocky Forty Falls
By Armen Suny · Last verified Sep 2026
LiDAR & 3D terrain
Photo Credits (2)
Difficulty
Easy
Trail Length
1.0 miles
Trail Type
Out And Back
About Rocky Forty Falls
Rocky Forty Falls is a quiet, lesser-known cascade tucked into Michigan’s Upper Peninsula and favored for its peaceful, forested setting. The falls are modest in size but photogenic, with a series of small drops that create a soothing soundtrack amid the trees. Because it doesn't attract the crowds of some larger UP waterfalls, Rocky Forty is a great choice for hikers seeking a more contemplative outing in nature. The approach is an out-and-back trail of about 2.4 miles (3.9 km) round trip with roughly 350 feet (107 m) of elevation gain, rated moderate—so expect a few short climbs and uneven footing in places. The nearest developed camping is the Black River Harbor Pavilion, roughly 18.9 km (about 11.8 miles) away, making day trips common for visitors; bring sturdy shoes, water, and a camera for the best experience.
The Setting
Rocky Forty Falls sits at 1,253 feet along the Black River, in the foothills of Michigan.
Trail & Hike Details
Trail Description
The trail to Rocky Forty Falls is a 2.4-mile (3.9 km) out-and-back with approximately 350 feet (107 m) of cumulative elevation gain and a moderate difficulty rating. The route follows forested terrain with short changes in grade; hikers should expect uneven footing in spots (roots and rocks) and a few brief climbs. USFS-specific trail surface, grade, and trail class information are not provided in the available data.
What to Expect
Dogs are welcome.
Accessibility
The trail is not wheelchair accessible. Uneven terrain and elevation changes require steady footing.
Frequently Asked Questions
🐶 Are Dogs Allowed at Rocky Forty Falls?
✅ Dogs are allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Rocky Forty Falls?
❌ Swimming is not allowed
When to Visit
Spring is the best time to visit Rocky Forty Falls, as the water flow is usually at its peak due to snowmelt. Summer and fall are also good times to visit, offering pleasant weather and colorful foliage.
Seasonal Access
The best time to visit is Spring, Summer, and Fall. Winter access may be limited.
Safety Information
Be cautious of slippery rocks near the falls. Cell phone reception may be limited in the area, so plan accordingly. Always let someone know your plans if hiking alone.
Current Water Conditions
15 ft³/s
Current discharge — how much water is flowing
Much lower than usual for this time of year
Based on 53 years of record
1.89 ft
Water depth at gauge
7-Day Discharge Trend
What does this mean for your visit?
Flow is well below normal for this time of year, so the waterfall may be a trickle.
About This Gauge
7-Day Flow Outlook
Based on the USGS gauge BLACK RIVER NEAR BESSEMER, MI (4 km away).
Today
Low
15 cfs
6/10Tomorrow
Low
16 cfs
6/10Sun
Moderate
16 cfs
5/10Mon
Low
15 cfs
6/10Tue
Moderate
14 cfs
5/10Wed
Moderate
15 cfs
5/10Thu
Moderate
22 cfs
5/10Best window: Today — low flow, sunny (trip score 6/10).
Best time of year: this gauge typically runs highest from late March to late May, peaking in April.
How we calculate this
This is a transparent outlook, not a precise forecast. We take the waterfall's current flow strength (how it ranks against its historical normal for today, from the nearest USGS stream gauge), carry that ranking forward along the gauge's seasonal curve, and nudge it for forecast rain. Confidence is highest for the next day or two and falls further out. Always check official conditions and your own judgment before visiting — high flows can be dangerous.
Know when to go.
Get a free email alert when waterfalls near Ironwood hit peak flow. We only send when conditions are worth the trip — no weekly newsletters, no spam.
Weather Forecast
The Terrain, Seen by LiDAR
Aircraft-mounted lasers measured this ground to within inches. Trees and buildings are digitally stripped away, leaving the bare shape of the land the water has carved.
Here the descent is spread out: 1-meter lidar measures about 50 feet of drop through Rocky Forty Falls, stretched along the creek rather than stacked in one wall. The brink sits at about 1,257 feet above sea level.
The ground changes about 34 feet in the 500 feet above the falls and 34 feet in the 500 feet below. The falls face north and stay mostly shaded, with soft, even light all day.
Drag to compare. The dot marks the waterfall. The frame is about a mile across.
- Ground elevation
- 1,257 feet
- Measured by 1-meter lidar
- Drop at the falls
- About 50 feet
- Change in ground height within ~250 feet of the falls
- Faces
- North
- Mostly shaded, so the light stays soft and even all day.
A slice through the lidar ground surface, from above the falls to downstream (heading north).
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
Location & Access
Getting There
Rocky Forty Falls is located near the town of Munising in Michigan's Upper Peninsula. Access to the falls may require navigating unpaved roads and a short hike through the forest. Visitors are advised to use a reliable map or GPS as signage may be limited.
Get Directions on Google MapsParking
Parking is available in a small, unmarked area near the trailhead. Space may be limited, so plan accordingly.
Elevation
1,253 feet above sea level
Coordinates
46.507222° N, -90.120556° W
Visitor Tips & Gear
Wear sturdy shoes as the trail may be uneven. Bring insect repellent, especially during the summer months, as mosquitoes can be prevalent. Consider visiting in the spring when water flow is typically higher.
Where to Stay
Snow Otter Haus - 2
North Ironwood Acres - Black River Lodge
Quality Inn Ironwood
AmericInn by Wyndham Ironwood
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
Some links are affiliate links. We may earn a commission at no extra cost to you.
Nearby Campground
BLACK RIVER HARBOR PAVILION
11.8 miles away · 1 sites
Overview Planning a visit to the Black River Harbor Pavilion? Watch for Alerts at the top of the page for any Alerts regarding this facility. The Black River Harbor Pavilion is located within the Black Harbor Recreation Area on Lake Superior in Michigans Upper Peninsula. The historic stone and wood pavilion was constructed by the Civilian Conservation Corps in the 1930s. Recreation Lake Superior offers great opportunities for boating, fishing, and swimming. The North Country National Scenic Trail
Book on Recreation.govAdditional Information
Nearby Attractions
Nearby attractions include Munising Falls, Pictured Rocks National Lakeshore, and Miners Castle.
Wildlife
The area is home to various wildlife, including birds, deer, and small mammals. Be cautious of ticks and other insects.
Cities near Rocky Forty Falls
Nearby Waterfalls
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