Housatonic River Fly Fishing Report - September 20, 2026

Fly Fishing Report

HOUSATONIC RIVER

Report
SEP 20 — 27, 2026
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Flow
341CFS
HOUSATONIC RIVER AT FALLS VILLAGE, CT
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Water Temp
Updated 2026-09-20
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Weather
48–68°F
Mostly Cloudy
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Clarity
Clear
Check post-storm
Flow is running at 341 CFS at Falls Village (gauge height 2.16 ft), up from last week's 251 CFS and still in fishable shape — but today's all-day rain showers and evening thunderstorms will push that number higher by tonight, so get on the water early. Overcast skies and a high of 64°F set up ideal Blue Wing Olive conditions through midday.
Best Time Window
  • 7 AM - 9:30 AM: Pre-hatch midge nymphing in the tailouts before rain arrives — fish slow and deep.
  • 10 AM - 1 PM: Peak BWO hatch window; overcast skies and rising humidity will push heavy Baetis activity on the flats and slower pools.
  • 1 PM - 3 PM: Transition window before storms intensify — switch to heavier jig nymphs in deeper runs as flow begins to rise.
Guide's Tip
From the benchToday is a classic Housatonic BWO day — overcast skies, cool temps, and rising humidity will trigger a strong Baetis hatch from roughly 10 AM through early afternoon. Position yourself at the head of the slower pools and flats in the TMA stretch, where trout will stack up and sip emergers just below the film. Use a 12-foot 6X fluorocarbon leader and watch for subtle, nose-up rises rather than splashy takes. Once the rain intensifies in the afternoon and flow starts climbing, abandon the dry-fly game and switch to a heavier jig nymph fished tight to the bottom in the deeper slots — that's where the bigger browns will hold as conditions deteriorate.
Main Species
Brown Trout
Rainbow Trout
Smallmouth Bass
Report generated September 20, 2026 — Next update: September 27, 2026