Hatch calendars by river
New Hampshire trout hatch calendars.
1 river covered. Each calendar runs through the full year of mayfly, caddis, stonefly, midge, and terrestrial activity — with peak windows, fly patterns, and water temperature triggers.
What's hatching in New Hampshire — May
Most-active hatches across New Hampshire's 1 covered river right now. Tap a hatch for the full species profile.