LiDAR terrain view · USGS 3DEP
Big Ambejackmockamus Falls
By Armen Suny · Last verified Oct 2026
LiDAR & 3D terrainDifficulty
Easy
Trail Length
0.5 miles
Trail Type
Out And Back
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. 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.
Trail & Hike Details
Trail Description
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 short and relatively flat, but the surface may be uneven. Contact the managing agency for accessibility details.
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
Water temperature is currently 45°F — cold enough to cause numbness quickly. Avoid prolonged water contact and use caution near the falls.
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
These readings come from the USGS gauge on East Branch Penobscot River, 23.4 miles away, not on Big Ambejackmockamus Falls's own stream. Use them as a sign of whether the area is running wet or dry.
182 ft³/s
Current discharge — how much water is flowing
Higher than usual for this time of year
Based on 2 years of record
2.46 ft
Water depth at gauge
45°F
Very coldExpect numbness within minutes
7-Day Discharge Trend
What does this mean for your visit?
The water is flowing higher than usual for this time of year. Water temperature is very cold at 45 degrees F, expect numbness within minutes.
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
Roaring
197 cfs
6/10Tomorrow
Roaring
205 cfs
6/10Thu
Roaring
191 cfs
9/10Fri
Roaring
192 cfs
6/10Sat
Roaring
196 cfs
6/10Sun
Roaring
205 cfs
6/10Mon
Roaring
195 cfs
9/10Best window: Thu — roaring flow, partly sunny (trip score 9/10).
Best time of year: this gauge typically runs highest from mid March to late 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.
Is Big Ambejackmockamus Falls Frozen?
Updated about 8 hours agoNot frozen highs above freezing lately
Big Ambejackmockamus Falls is not frozen right now; highs have been above freezing. Yesterday ran 44°F to 33°F.
- Days below freezing
- 0 of the last 14
- Current cold streak
- 0 days
- Freezing days ahead
- 0 of the next 7
- Flow
- 177 ft³/s
Winter safety. Frozen falls are the one waterfall trip with a documented injury pattern: falling ice, and ice-glazed rock and trail. Wear microspikes, keep well back from the base and from overhangs, and never walk out on ice over moving water.
Estimate from Open-Meteo daily temperatures at the falls, the LiDAR-measured facing direction, and the nearest stream gauge. It is a likelihood, not a report from the trail. See every frozen waterfall in Maine.
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.
The ground through the falls loses about 62 feet in steep steps rather than one leap. The ground at the falls is roughly 638 feet above sea level.
The ground changes about 88 feet in the 500 feet above the falls and 25 feet in the 500 feet below. The falls face south and sit in full sun for most of the day, best photographed early or late.
Drag to compare. The dot marks the waterfall. The frame is about a mile across.
- Ground elevation
- 638 feet
- Measured by 1-meter lidar
- Drop at the falls
- About 62 feet
- Change in ground height within ~250 feet of the falls
- Faces
- South
- Sunlit most of the day. Go early or late for softer light.
A slice through the lidar ground surface, from above the falls to downstream (heading south).
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
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.
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.
Nearby Waterfalls
LiDAR
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