New York Hatch Chart
Which insects hatch on New York rivers each month, when they peak, and the flies to match.
- 19Hatches
- 3Hatching in November
- 10Watersheds
Hatching in November
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Blue-Winged OliveMayfly
Sparkle Dun #18–22, CDC Emerger #18–22
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Autumn CaddisCaddis
October Caddis #14
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Fall BWOOther
Sparkle Dun #18–20
New York hatch calendar
Every hatch on the 10 watershed hatch charts of New York's rivers, month by month.
| Hatch | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Flies | Water temp |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Little Black Stonefly Stonefly Capnia sp. | In season | Peak | In season | Elk Hair Caddis #18 | 38–50°F | |||||||||
| Blue-Winged Olive Mayfly Baetis tricaudatus | In season | In season | Peak | Peak | In season | In season | Sparkle Dun #18–22, CDC Emerger #18–22 | 44–58°F | ||||||
| Early Black Stonefly Stonefly Allocapnia sp. | Peak | In season | Black Elk Hair #16–18 | 36–50°F | ||||||||||
| Quill Gordon Mayfly Epeorus pleuralis | In season | Peak | Quill Gordon #12–14 | 48–56°F | ||||||||||
| Grannom Caddis Caddis Brachycentrus numerosus | In season | Peak | Elk Hair Caddis #14–16 | 48–58°F | ||||||||||
| Hendrickson Mayfly Ephemerella subvaria | In season | In season | Comparadun #12–14 | 48–58°F | ||||||||||
| March Brown Mayfly Stenonema vicarium | In season | Peak | In season | March Brown #10–12 | 52–62°F | |||||||||
| Brown Drake Mayfly Ephemera simulans | In season | Peak | Brown Drake #10–12 | 55–65°F | ||||||||||
| Grannom Caddis Brachycentrus numerosus | Peak | In season | Elk Hair Caddis #14–16 | 48–58°F | ||||||||||
| Green Drake Mayfly Ephemera guttulata | Peak | Peak | Green Drake Wulff #8–10 | 55–65°F | ||||||||||
| Light Cahill Mayfly Stenacron interpunctatum | In season | Peak | In season | Light Cahill #14 | 58–70°F | |||||||||
| Sulphur Mayfly Ephemerella dorothea | In season | Peak | In season | Parachute Sulphur #16–18 | 55–68°F | |||||||||
| Hex / Giant Mayfly Mayfly Hexagenia limbata | Peak | In season | Hex Paradrake #4–6 | 62–72°F | ||||||||||
| Michigan Caddis Caddis Hydropsyche sp. | In season | Peak | In season | Sparkle Pupa #14 | 58–70°F | |||||||||
| Trico Mayfly Tricorythodes sp. | In season | Peak | In season | Trico Spinner #22–26, Trico Poly Wing #22–26 | 60–72°F | |||||||||
| Flying Ant Terrestrial Camponotus sp. | Peak | In season | Fur Ant #16–18 | 64–76°F | ||||||||||
| Isonychia Mayfly Isonychia bicolor | In season | Peak | In season | Slate Drake #10–12 | 58–68°F | |||||||||
| Autumn Caddis Caddis Neophylax sp. | In season | Peak | In season | October Caddis #14 | 48–58°F | |||||||||
| Fall BWO Other Baetis sp. | In season | Peak | In season | Sparkle Dun #18–20 | 44–56°F |
- In season
- Peak
- This month
A month is marked when any of the watershed charts lists the hatch, and as a peak when most of them peak then. Smaller streams often see lighter or later hatches.
River hatch charts in New York
New York hatch FAQ
What are the main hatches in New York?
Blue-Winged Olive, Hendrickson, Sulphur, Trico, and Isonychia are on the most watershed hatch charts across New York's rivers.
When is the best hatch fishing in New York?
May, when 9 of the 19 hatches on the chart are on the water. Check local reports: weather moves every hatch.
Where does this hatch chart come from?
From the hatch charts of the 10 watersheds New York's rivers run through. A month is marked when any of them lists the hatch, and as a peak when most of them peak then.
