A dam sets this river's temperature, not the weather, so it can shift several degrees within hours when the release changes. Measured 14 km from the gauge. It also warms as it runs away from the dam.
- Blackfly larvae/pupaeMost likelyLower confidence#16–18–20 · PupaSmall dark soft-hackle drifted through riffle seams.
- Riffle beetles (US)Most likelyLower confidence#16–18–20 · NymphSmall riffle beetle; larva and adult, clean riffles.
- Diving beetlesAlso possibleLower confidence#8–10–12 · AdultTwitch a beetle pattern along weedy edges at dusk.
- Pond snailsMost likelyLower confidence#10–12–14 · AdultDead-drift or twitch a snail pattern near weed beds.
- Aquatic wormsMost likelyLower confidence#12–14–16 · AdultDead-drift a worm pattern deep - a year-round staple.
Hatch predictions
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Hatch predictions
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Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
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Based on species-occurrence records, not local invertebrate surveys.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
- Artificial lures only, all year, GA 20 to Medlock Bridge; 8 trout a day
- Georgia licence plus trout licence.
Wild brown trout from the self-sustaining Buford tailwater population, thinning downstream; rainbows are stocked.
The full read · show the working · for Brown Trout · confidence 90%
- Trout 1 January → 31 December
Chattahoochee River — Artificial-Lure Reach (GA 20 to Medlock Bridge)

A dam sets this river's temperature, not the weather, so it can shift several degrees within hours when the release changes. Measured 14 km from the gauge. It also warms as it runs away from the dam.
- Blackfly larvae/pupaeMost likelyLower confidence#16–18–20 · PupaSmall dark soft-hackle drifted through riffle seams.
- Riffle beetles (US)Most likelyLower confidence#16–18–20 · NymphSmall riffle beetle; larva and adult, clean riffles.
- Diving beetlesAlso possibleLower confidence#8–10–12 · AdultTwitch a beetle pattern along weedy edges at dusk.
- Pond snailsMost likelyLower confidence#10–12–14 · AdultDead-drift or twitch a snail pattern near weed beds.
- Aquatic wormsMost likelyLower confidence#12–14–16 · AdultDead-drift a worm pattern deep - a year-round staple.
Hatch predictions
Today's headline hatch shown — see all 5 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Based on species-occurrence records, not local invertebrate surveys.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
- Artificial lures only, all year, GA 20 to Medlock Bridge; 8 trout a day
- Georgia licence plus trout licence.
Wild brown trout from the self-sustaining Buford tailwater population, thinning downstream; rainbows are stocked.
The full read · show the working · for Brown Trout · confidence 90%
- Trout 1 January → 31 December