Free Resource · Updated 2026
The upper Connecticut River forms the border between New Hampshire and Vermont for most of its run through the region. It is a large, stately river with productive pools and long riffles. The upper sections near Pittsburg and First Connecticut Lake are especially well-regarded for wild trout and consistent hatch activity.
Connecticut River (NH) Hatch Calendar — Quick Reference
From the Connecticut Lakes down through the North Country, the upper Connecticut offers serious fly fishing in a remote setting. The river is wide and requires good wading gear and attention to flows. The best trout water is typically in the upper reaches where water stays cooler longer.
The river has a more tailwater-like character in the upper reaches due to regulated releases from the Connecticut Lakes dams. This moderates temperatures and extends the season. Midges are effective year-round and can be the only game in town during winter.
Spring sees Hendricksons and BWOs on the wider pools. Summer brings Tricos and Sulphurs on the slower glides. Fall is often the best time to fish the Connecticut with BWOs and Autumn Caddis combining for excellent dry fly opportunities.
See the full New Hampshire Fly Hatch Chart for hatch timing across all of New Hampshire's top trout streams.
Check Conditions Near Connecticut River (NH)What to Fish
Ephemerella subvaria
Hendrickson hatches on the upper Connecticut produce some of the best dry fly fishing of the season on this large river. Fishing the emerger in the surface film is often more effective than the dry dun.
Recommended: Hendrickson #14
Tricorythodes spp.
Early morning Trico spinner falls on the Connecticut flats require fine tippets and accurate casting to rising trout. This is a technical but rewarding summer opportunity.
Recommended: Trico Spinner #20-22
Baetis spp.
BWOs on the upper Connecticut can produce excellent fishing on cool overcast days in both spring and fall. The larger water means more fish are available but finding risers takes some searching.
Recommended: BWO Parachute #18-20
Chironomidae
Winter midge fishing on the regulated upper Connecticut extends the season well past what most freestone rivers offer. Fish gather in deeper slower runs in cold weather.
Recommended: Griffiths Gnat #20-24
Common Questions
The boundary between NH and VT runs down the west bank of the Connecticut (not the center). This means the entire river is legally in New Hampshire and a New Hampshire fishing license is required.
The Pittsburg area near First Connecticut Lake and the Trophy Trout stretch downstream are considered the best. Access is good and the trout population is strong in this stretch.
Check the New Hampshire Fish and Game regulations for current season dates. The Trophy Trout section has specific rules and may differ from general trout season dates.
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