Big Ambejackmockamus Falls
By Armen Suny · Last verified May 2026
Difficulty
Moderate
Trail Length
2.4 miles
Trail Type
Out And Back
Elevation Gain
350 ft
About Big Ambejackmockamus Falls
Big Ambejackmockamus Falls tumbles along the West Branch of the Penobscot River in Maine, offering a rugged blend of cascading rapids and calmer pools that attract paddlers and day hikers alike. The falls sit in a forested river corridor where mossy ledges and tree-framed viewpoints make for dramatic photos and a quietly remote Maine waterscape that doesn’t require an extended approach. The hike to the falls is rewarding rather than flashy: a 2.4-mile out-and-back that climbs roughly 350 feet, winding through mixed woods before opening onto the river. Expect a moderate outing with a few steeper pitches and uneven footing—perfect for a half-day trip combining forest walking with a striking riverside destination. The nearest formal camping is roughly 36.5 km away at Katahdin Woods and Waters National Monument Camping and Huts, so plan logistics accordingly.
The Setting
Big Ambejackmockamus Falls sits at 640 feet along the E. Br. Penobscot River, in the foothills of Maine.
Trail & Hike Details
The Approach
The moderate 2.4-mile out-and-back trail gains 350 feet of elevation on the way to the falls.
Trail Description
2.4-mile out-and-back, ~350 feet elevation gain, difficulty: moderate. The route follows a singletrack footpath through mixed forest with occasional root and rock obstacles and short steeper sections; footing can be uneven in places, so sturdy shoes are recommended. The trail opens onto the West Branch Penobscot River corridor and ends at a riverside viewpoint with clear views of the falls and varied river flows—allow extra time for photography or to explore the riverbank.
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 Big Ambejackmockamus Falls?
✅ Dogs are allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Big Ambejackmockamus Falls?
❌ Swimming is not allowed
When to Visit
Spring and early summer are ideal for visiting, as the water flow is typically higher due to snowmelt. Fall offers beautiful foliage, while summer provides warmer weather for outdoor activities.
Seasonal Access
The best time to visit is Spring, Summer, and Fall. Winter access may be limited.
Safety Information
Exercise caution near the water, as the rocks can be slippery and the currents strong. Be aware of logging trucks on the Golden Road and yield the right of way.
Current Water Conditions
Based on a USGS gauge 23.4 miles away
480 ft³/s
Current discharge — how much water is flowing
Much lower than usual for this time of year
Based on 2 years of record
3.04 ft
Water depth at gauge
67°F
CoolRefreshing for swimming
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. Water temperature is a refreshing 67 degrees F, good for a quick swim.
About This Gauge
This gauge is on a regional waterway. Conditions at the falls may differ, especially after local rain.
7-Day Flow Outlook
Based on the USGS gauge E. Br. Penobscot River below Grand Lake Matagamon (38 km away).
Today
Low
518 cfs
4/10Tomorrow
Moderate
566 cfs
4/10Sun
Moderate
549 cfs
5/10Mon
Low
498 cfs
6/10Tue
Moderate
547 cfs
4/10Wed
Moderate
551 cfs
5/10Thu
Low
613 cfs
4/10Best window: Mon — low flow, sunny (trip score 6/10).
Best time of year: this gauge typically runs highest from mid March to mid May, peaking in May.
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 Brownville Junction hit peak flow. We only send when conditions are worth the trip — no weekly newsletters, no spam.
Weather Forecast
Location & Access
Getting There
Big Ambejackmockamus Falls is located near the Golden Road, a private logging road in Maine. Access typically requires driving along this road, which is unpaved and may have rough conditions. Visitors should use caution and ensure their vehicle is suitable for such terrain.
Get Directions on Google MapsParking
Parking is available along the Golden Road near the falls, but spaces may be limited and conditions can vary depending on the season.
Elevation
640 feet above sea level
Coordinates
45.865878° N, -69.091993° W
Visitor Tips & Gear
Bring bug spray during the warmer months, as mosquitoes and black flies can be prevalent. Be cautious on the Golden Road, as it is an active logging route with large trucks. Check weather conditions before visiting, as rain can make the road and trail slippery.
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With 2.4 miles and 350 ft of elevation gain, sturdy boots and trekking poles will help on this moderate trail. Sun exposure on the trail makes good sun protection a must in summer.
Columbia Watertight II Rain Jacket
Packs into its own pocket, seam-sealed, and keeps you dry from spray and surprise rain.
Earth Pak Waterproof Dry Bag
Keeps your phone and gear dry when waterfall mist soaks everything else.
Waterproof Phone Pouch (AiRunTech)
Cheap insurance — take photos right next to the falls without killing your phone.
Timberland Euro Sprint Mid Waterproof
Trusted waterproof boot with premium leather and grippy rubber sole — reliable on rocky, wet trails.
TrailBuddy Trekking Poles
Lightweight aluminum, cork grips, and flip-locks that actually hold — a best-seller for good reason.
Polarized Sunglasses (Knockaround)
Cuts glare off the water so you actually see the falls — and your photos turn out better too.
Where to Stay
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
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Nearby Campground
Katahdin Woods and Waters National Monument Camping and Huts
22.7 miles away · 27 sites
Overview Katahdin Woods and Waters National Monument is located in Maine’s north woods. Katahdin Woods and Waters protects part of an extraordinary natural and cultural landscape: the mountains, woods, and waters where the East Branch of the Penobscot River and its tributaries, including the Wassataquoik Stream and the Seboeis River, run freely. Campsites, lean-tos and huts located throughout the monument provide opportunities to stay overnight while hiking, biking, paddling and enjoying other re
Book on Recreation.govAdditional Information
Nearby Attractions
Nearby attractions include Katahdin Woods and Waters National Monument and Baxter State Park, which offer additional hiking and outdoor activities.
Wildlife
The area is home to a variety of wildlife, including moose, deer, and birds. Visitors should be cautious and respectful of the natural habitat.
Cities near Big Ambejackmockamus Falls
Nearby Waterfalls
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