What the Swift River offers and where to fish it

The Swift River runs roughly 20 miles from its headwaters near the Maine border down through Conway to meet the Saco River. It's a medium-sized freestone stream with a mix of pocket water, pools, and faster runs—the kind of water that holds both brook trout and brown trout year-round, with smallmouth bass in the lower sections. The river is split into distinct fishing zones by dam locations and road access, so knowing which section you're targeting matters more than just showing up.

The upper river above Swiftwater Covered Bridge is pocket water and small pools, best in spring and early summer when water levels are higher. The middle section from Swiftwater down to the Route 16 bridge is the most accessible and most fished—it has deeper pools and steadier current. The lower river below Route 16 widens out and slows, warming in summer and holding more smallmouth than trout. Access is straightforward in most places, but parking and posted land require attention.

Key Takeaways

  • The Swift River holds brook trout and brown trout in the upper and middle sections, with smallmouth bass becoming more common below Route 16.
  • Swiftwater Covered Bridge marks the boundary between pocket water (upper) and deeper pools (middle), and each section fishes differently by season.
  • Public access exists at the Route 16 bridge, Swiftwater Covered Bridge, and several pullouts along the road, but much land is posted and must be respected.
  • Spring and early summer bring higher water and better dry-fly fishing; late summer and fall require smaller flies and lower-water tactics.
  • The river can be crowded on weekends, especially near the covered bridge, so weekday mornings or off-season visits often mean more solitude.

Upper river: Pocket water and small pools above Swiftwater

The upper section above Swiftwater Covered Bridge is steep, broken water with small pools between boulders. This is where you'll find the most brook trout and the smallest fish, but also where a single good pool can hold a dozen trout. The water is cold and clear, and the current is fast enough that trout don't have to work hard to feed. Access here is limited—there's a small pullout near the covered bridge on the Conway side, and you can walk upstream from there, but much of the land is private.

Fish this section in spring (April through May) and early summer (June) when snowmelt keeps water levels high and cold. Nymphs work better than dries here because the current is too fast for many insects to float long. Small black stonefly nymphs, pheasant tail nymphs, and caddis larvae in sizes 14 to 18 will take fish. Dry flies work in June and July when the water slows slightly, but expect to lose flies to the rocks. The pocket water is also good in fall (September and October) when water cools again and trout feed more actively.

Middle river: Deeper pools and steady current from Swiftwater to Route 16

This is the most productive section and the most fished. From Swiftwater Covered Bridge downstream to the Route 16 bridge, the river has deeper pools, longer runs, and more stable water. The current is strong but not chaotic, and there are clear feeding lanes where trout hold. This section is also the most accessible—you can park at Swiftwater Covered Bridge (small lot, fills on weekends) or at the Route 16 bridge (larger lot, easier access).

The middle river fishes well year-round, but the pattern changes with season. In spring and early summer, high water pushes trout into slower water along the banks and behind boulders. Fish the edges and the inside of bends. By mid-summer (July and August), water levels drop and the river warms; trout move to deeper pools and faster current where water is cooler and more oxygenated. Fish the heads and tails of pools, and focus on early morning and evening. Fall (September through October) brings cooler water and active feeding again—this is often the best time for larger brown trout.

Fly selection here is broader than the upper river. Nymphs (size 12 to 16) work all season. Dry flies work in June through September, especially small caddis patterns (size 16 to 18) and mayfly dries (size 14 to 16). Streamers (size 6 to 10) in black, olive, or white will take larger trout, especially in spring and fall. Spin anglers do well here with small spinners and inline spinners in silver or gold.

Lower river: Wider water and smallmouth bass below Route 16

Below the Route 16 bridge, the Swift widens and slows. The water warms, and smallmouth bass become the dominant species, though trout are still present in the deeper pools. This section is less crowded than the middle river and offers a different kind of fishing. Access is available at the Route 16 bridge and at several pullouts along Route 16 heading toward the Saco confluence.

Smallmouth fishing here is best from May through October. Use small topwater plugs, crankbaits, and soft plastics in the 3- to 4-inch range. Fish the deeper pools and around any structure—rocks, fallen trees, or undercut banks. Early morning and evening are most productive. Trout in this section are larger than upstream but fewer in number; fish nymphs and streamers in the deeper pools, especially in spring and fall. The lower river is also a good float section if you have access to a canoe or kayak.

Seasonal patterns and water conditions

Spring (April through May) brings high water from snowmelt. The river is cold, fast, and often off-color. Fish nymphs and streamers in sizes 12 to 16, and focus on slower water along the banks. Expect to catch smaller fish, but the action is usually steady. By late May, water levels begin to drop and clarity improves.

Early summer (June) is often the best time to fish the Swift. Water is still cool, levels are moderate, and insects are hatching. Dry flies work, especially in the afternoon. Caddis hatches are common, and small mayflies appear in the evenings. Fish the middle river during this period—it's productive and accessible.

Mid-summer (July and August) can be slow. Water warms, levels drop, and trout move to deeper, faster water. Fish early morning and evening, and focus on the heads of pools and fast runs. Smaller flies (size 16 to 18) and lighter tippets are necessary. This is a good time to explore the lower river for smallmouth.

Fall (September through October) brings cooler water and active feeding. This is often the best time for larger brown trout. Water levels are moderate, and clarity is good. Fish nymphs, streamers, and dry flies. The middle and lower river are both productive. By late October, water cools further and fishing slows as trout prepare for winter.

Access, parking, and what to know before you go

The Swift River is accessible from Route 16, which runs alongside the river through Conway. There are three main access points: Swiftwater Covered Bridge (small parking lot, upper and middle river), Route 16 bridge (larger lot, middle and lower river), and several pullouts along Route 16 heading south toward the Saco. All are free and open to the public.

Much of the land along the Swift is private, and it is posted. Respect posted signs and do not cross fences. Stick to the water and the immediate banks. The river itself is public water, and you have the right to fish it, but you do not have the right to cross private land to reach it. If you're unsure about access, ask locally or fish from the established pullouts.

Parking fills quickly on weekends, especially near Swiftwater Covered Bridge. Arrive early or fish on weekdays. The covered bridge itself is a popular tourist spot, so expect crowds on nice days. The river can be crowded in June and July, but quieter in spring and fall.

Wading is generally safe, but the river has a strong current and slippery rocks. Wear a wading belt and use a wading staff in deeper sections. Water temperature is cold year-round, so wear appropriate clothing. The upper river is steeper and more technical; the middle river is moderate; the lower river is easier wading.

Regulations and what you need to fish

New Hampshire fishing regulations apply. You need a valid New Hampshire fishing license to fish the Swift River. Licenses are available online through the New Hampshire Fish and Game Department website or at local sporting goods stores. A three-day license is available if you don't want to buy an annual license.

The Swift River is open year-round for trout, with no special restrictions. Trout season runs from January 1 through October 31 for most of the state, but the Swift is fishable in winter if you're willing to brave the cold. Smallmouth bass season runs from June 15 through November 30. Check current regulations before you go, as rules can change.

There are no special gear restrictions on the Swift. Fly fishing, spin fishing, and bait fishing are all allowed. Some anglers practice catch-and-release, but it's not required. If you keep fish, know the size and bag limits—these vary by species and can change year to year.

Frequently Asked Questions

Is the Swift River good for beginners?

The middle section from Swiftwater to Route 16 is good for beginners because it has clear access, steady water, and reliable fishing. The upper river is steeper and more technical. Start at the Route 16 bridge or Swiftwater Covered Bridge, fish the pools, and work your way upstream or downstream as you gain confidence.

What's the best time of year to fish the Swift?

June is often the most reliable month—water is cool, insects are hatching, and access is easy. Fall (September and October) is also excellent for larger trout. Spring can be good but water is often high and off-color. Mid-summer (July and August) is slower and requires early morning or evening fishing.

Can I fish the Swift with a spinning rod?

Yes. Small spinners, inline spinners, and crankbaits all work well, especially in the middle and lower river. Spin fishing is often more effective than fly fishing in high water or when trout are not actively feeding. Many local anglers use both fly and spin gear depending on conditions.

How crowded is the Swift River?

The middle section near Swiftwater Covered Bridge can be crowded on weekends, especially in June and July. Weekday mornings are quieter. The upper river is less crowded because access is limited. The lower river is generally quieter than the middle section.

What should I bring to fish the Swift?

Bring a fishing license, waders or water shoes, a wading staff, and appropriate clothing for the season. The water is cold year-round, so dress warmly even in summer. Bring flies or lures in small to medium sizes, a net, and a headlamp if you plan to fish early morning or evening. Sunscreen and bug spray are useful in summer.