Big Eddy — Swift River Swimming Hole
A deep, quiet pool on the Swift River off the Kancamagus Highway, about 2 miles east of Lower Falls. While every tourist stops at Lower Falls and Rocky Gorge, Big Eddy sits unmarked on the roadside and requires climbing over a guardrail to reach.
Lower Falls on the Kanc is a zoo from June through September — lifeguards, packed lots, families staking out every rock. Big Eddy has no sign, no parking lot, no facilities. You find it by knowing what a wooden retainer wall on the left side of the road looks like. The pool is deep enough to jump into, the current runs slower than the falls, and the rock slabs dry warm in the sun.
Drive the Kancamagus Highway (Route 112) west from Conway. About 2 miles east of Lower Falls, look for a wooden retainer wall on the left and a guardrail on the north side. Park on the shoulder. Climb over the guardrail to reach the rock above the pool. WMNF parking pass ($5/day or $30/year) required if using NF lots — shoulder parking typically free.
Packing Checklist
- ☐ Water shoes with real grip
- ☐ Quick-dry towel
- ☐ Dry bag for electronics
- ☐ Sunscreen (waterproof)
- ☐ Change of clothes
- ☐ First aid kit
- ☐ Snacks and water
The Kancamagus Highway swimming holes operate on a strict hierarchy every local understands. Lower Falls is for tourists. Rocky Gorge is for tourists who read a slightly better guidebook. Big Eddy is for the people who drive the Kanc daily and know every pull-off by the shape of the guardrail.
The water carves deep where the Swift River bends against a rock face — deep enough that jumping from the adjacent rocks carries real commitment. Granite slabs collect heat all morning and serve as natural warming stations between dips. The water stays cold — snowmelt from the White Mountains — but by July the shock fades after the first plunge.
Check water levels before heading out. In spring and after heavy rain, the Swift River runs hard and Big Eddy becomes dangerous. Never swim alone at this spot. By late June the levels usually drop enough that the pool turns from whitewater feature to swimming hole.