Light Cahill
Light Cahills are cream-colored evening mayflies that emerge from summer into early fall.
Top fly patterns
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Month-by-month activity
Number of rivers where the Light Cahill hatch is active each month.
Rivers where Light Cahill hatches
How to fish the Light Cahill
Fish the dun hatch in the last two hours of evening light with a size 12–16 Light Cahill parachute or comparadun.
Frequently asked
When does the Light Cahill hatch?
Peak emergence: June, July, August. Timing varies by elevation, latitude, and water temperature.
What flies match the Light Cahill hatch?
Top patterns: Light Cahill (size 12-16).
What rivers have a good Light Cahill hatch?
Light Cahill hatches are documented on 14 rivers including: Farmington River, Housatonic River, Deerfield River, Battenkill River, Upper Delaware River and 9 more.
How do I fish the Light Cahill hatch?
Fish the dun hatch in the last two hours of evening light with a size 12–16 Light Cahill parachute or comparadun.
What is the Light Cahill?
Light Cahills are cream-colored evening mayflies that emerge from summer into early fall. Family: Mayfly (Heptageniidae).
Related
Fly recommender · All hatches · All fly patterns · All rivers