Aerial view · USGS
Cynthia Falls
By Armen Suny · Last verified Sep 2026
3D terrainAbout Cynthia Falls
Cynthia Falls is a lesser-known waterfall located in Alaska, offering a serene and picturesque natural setting. It is surrounded by lush vegetation and rugged terrain, making it a hidden gem for nature enthusiasts. Specific details about its height are not well-documented.
Trail & Hike Details
Trail Description
Details about the trail leading to Cynthia Falls are not well-documented. The area may involve rugged terrain typical of Alaska, so visitors should prepare accordingly.
What to Expect
Visitors can expect a peaceful and scenic environment with the sound of cascading water. The surrounding area may feature dense vegetation and potentially uneven or challenging terrain.
Accessibility
Accessibility information is not available. The terrain may not be suitable for individuals with mobility challenges.
Frequently Asked Questions
🐶 Are Dogs Allowed at Cynthia Falls?
❌ Dogs are not allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Cynthia Falls?
❌ Swimming is not allowed
When to Visit
The best time to visit may vary depending on weather conditions, but summer and early fall typically offer the most accessible and pleasant conditions.
Seasonal Access
The best time to visit is Spring, Summer, Fall, and Winter.
Safety Information
Water temperature is currently 34°F — cold enough to cause numbness quickly. Avoid prolonged water contact and use caution near the falls.
Visitors should be prepared for potential hazards, including uneven terrain, wildlife encounters, and rapidly changing weather conditions. Carry bear spray and know how to use it. Always inform someone of your plans before venturing into remote areas.
Current Water Conditions
These readings come from the USGS gauge on Iliamna River, 22.3 miles away, not on Cynthia Falls's own stream. Use them as a sign of whether the area is running wet or dry.
720 ft³/s
Current discharge — how much water is flowing
About average for this time of year
Based on 29 years of record
57.63 ft
Water depth at gauge
34°F
Dangerously coldRisk of cold shock
7-Day Discharge Trend
What does this mean for your visit?
Flow is about average for this time of year. Water temperature is dangerously cold at 34 degrees F, avoid prolonged contact.
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 ILIAMNA R NR PEDRO BAY AK (36 km away).
Today
Barely Flowing
749 cfs
2/10Tomorrow
Low
834 cfs
4/10Sun
Low
870 cfs
4/10Mon
Low
1070 cfs
4/10Tue
Low
934 cfs
4/10Wed
Low
829 cfs
4/10Thu
Low
811 cfs
4/10Best window: Tomorrow — low flow, rain (trip score 4/10).
Best time of year: this gauge typically runs highest from mid May to late July, peaking in June.
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 Pedro Bay hit peak flow. We only send when conditions are worth the trip — no weekly newsletters, no spam.
Weather Forecast
The Terrain Around Cynthia Falls
High-resolution lidar hasn't been flown here yet, so this is the aerial view of the ground around the falls. Open the 3D view to tilt and spin the landscape.
The dot marks the waterfall. The frame is about a mile across.
Aerial imagery: USGS The National Map. Public domain.
Location & Access
Getting There
The exact location and directions to Cynthia Falls are not widely documented. Visitors are advised to consult local guides or park services for accurate information.
Get Directions on Google MapsParking
Parking availability near Cynthia Falls is unclear. It is recommended to check with local authorities or nearby trailheads for parking options.
Elevation
420 feet above sea level
Coordinates
59.786111° N, -153.208611° W
Visitor Tips & Gear
Bring appropriate gear for hiking in Alaska, including sturdy footwear, weather-appropriate clothing, and navigation tools. Check local conditions before visiting.
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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Additional Information
Nearby Attractions
Nearby attractions are not well-documented but may include other natural features typical of Alaska, such as hiking trails, rivers, or wildlife viewing areas.
Wildlife
The area may host typical Alaskan wildlife, including bears, moose, and various bird species. Visitors should exercise caution and follow wildlife safety guidelines.
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