Fall River Fly Fishing Report - September 20, 2026
FALL RIVER
ReportSEP 20 — 27, 2026
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Flow
—CFS
🌡️
Water Temp
—
☀️
Weather
48–80°F
Mostly Clear
💧
Clarity
Clear
Check post-storm
Live USGS gauge data is unavailable for Fall River today, so rely on visual reads on-site — recent reports indicate low, clear flows typical of late summer/early fall on this spring-fed system. Water temps should remain stable and cool given the river's spring-creek character, with comfortable fishing conditions ahead under mostly sunny skies and a high of 79°F.
What's Working — Hot Flies
Juju Baetis Tungsten #22
22
Parachute - Blue Wing Olive #22
22
Black Zebra Midge(TBH) #20
20
Olsen's Peacock Blowtorch Barbless #22 - 24
22-24
Olsen's Hare's Ear Blowtorch Barbless #20 - 28
20-22
Egan's Silver Bullet - Baetis #14
14
Egan's Warrior Perdigon - Rainbow #12
12
Roza's World Spain Perdigon Barbless #18 - 32
18-20
Corn-fed Caddis (CDC) Tan #20
20
Bionic Ant 2.0 - Black #16
16
Bionic Ant 2.0 - Brown #12
12
Egan's CDC Rainbow Warrior #22
22
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Blue-Winged Olive (Baetis) | 20-22 | Moderate | 10 AM - 1 PM |
| Midge | 20-24 | Heavy | 7 AM - 10 AM |
| Caddis | 18-20 | Light | 4 PM - 6 PM |
| Terrestrials (Ants) | 14-16 | Moderate | 11 AM - 3 PM |
| PMD (late stragglers) | 18-20 | Light | 11 AM - 1 PM |
Best Time Window
- 6:30 AM - 9:30 AM: Prime midge activity in slower runs and flats — fish small dark patterns in the upper column before the sun hits the water.
- 10 AM - 1 PM: BWO hatch window — switch to emergers and dry flies as olives begin popping and trout start rising in the flat, weedy sections.
- 3 PM - 6 PM: Terrestrial and caddis hour — work the grassy banks with ant patterns and finish the evening with a CDC caddis as light fades.
Guide's Tip
From the benchFall River's glassy spring-creek flows demand long, fine leaders — go 12 to 14 feet with 6X or 7X tippet and approach rising fish from downstream on your knees. During the midday BWO window, focus on the flat, weedy sections where trout set up in lanes and sip emergers with barely a ripple. If you're nymphing, use a tight-line or euro setup with minimal indicator to detect the subtle takes these educated fish give you. Keep your profile low and your shadow off the water — on a bluebird day like today, spooky fish will shut down the moment they sense pressure.
Main Species
Rainbow Trout
Brown Trout
