Hatch Chart
A Newly Hatched Dun
MARCH
| Black Midge | 20, 22 | Both |
| Grey Midge | 20, 22 | Both |
| Black Stone Fly | 14, 16 | Little Juniata River |
APRIL-MAY
| Blue Quill | 18 | Both |
| Blue Dun | 20 | Both |
| Blue-Winged Olive | 18, 20 | Spruce Creek |
| Hendrickson | 14 | Spruce Creek |
| Red Quill | 16 | Spruce Creek |
| Grannom Caddis | 12, 14 | Both |
| Black Caddis | 16 | Little Juniata River |
| Green Caddis | 14 | Both |
MAY-JUNE
| Blue Quill | 18, 20 | Both |
| Blue Dun | 20 | Both |
| Sulphur | 14, 16 | Both |
| March Brown | 12, 14 | Both (spotty) |
| Gray Fox | 12, 14 | Both (spotty) |
| Green Drake | 10 | Both (lower J.R.) |
| Slate Drake | 10 | Little Juniata River |
| Slate Drake | 12, 14 | Spruce Creek |
| Blue-Winged Olive | 14 | Both |
| Ginger Quill | 12, 14 | Little Juniata River |
| Light Cahill | 12, 14 | Both |
| Green Caddis | 14, 16 | Both |
| Yellow Crane Fly | 16, 18, 20 | Both |
JUNE-JULY
| Yellow Drake | 12 | Both |
| Blue-Winged Olive | 14 | Little Juniata River |
| Blue-Winged Olive | 16, 18, 20 | Spruce Creek |
| Blue Dun | 20 | Both |
| Sulphur | 16, 18 | Both |
| Slate Drake | 10 | Little Juniata River |
| Cream Cahill | 14, 16 | Little Juniata River |
| Tan Caddis | 16, 18 | Both |
| Cream Caddis | 16, 18 | Both |
JULY-AUGUST
| Trico | 22, 24 | Both (spotty on J.R.) |
| Little White May Fly | 28 | Little Juniata River |
| Blue Dun | 20 | Spruce Creek |
| Slate Drake | 14 | Spruce Creek |
| Cream Caddis | 16, 18 | Both |
AUGUST-SEPTEMBER
| Trico | 22, 24 | Both (spotty on J.R.) |
| Little White May Fly | 28 | Little Juniata River |
| White May Fly | 16 | Little Juniata River |
| Slate Drake | 12 | Little Juniata River |
| Slate Drake | 14 | Spruce Creek |
| Winged Ant | 20 | Little Juniata River |
| Gray Caddis | 16, 18 | Little Juniata River |
SEPTEMBER-OCTOBER
| Slate Drake | 12 | Little Juniata River |
| Slate Drake | 14 | Spruce Creek |
| Blue-Winged Olive | 20, 22 | Both |
| White May Fly | 16 | Little Juniata River |
| Blue Dun | 20 | Both |
OCTOBER
| Blue-Winged Olive | 20, 22 | Both |
| Blue Dun | 20 | Both |
| Blue Dun | 14 | Little Juniata River |
| Slate Drake | 12 | Little Juniata River |
| Bronze Crane Fly | 12, 14, 16 | Little Juniata River |
| Tan Caddis | 18, 20 | Both |
|
Terrestrial fishing starts in late May and can be productive well into October.
|
| Black Ants | 8 to 18 | Both |
| Beetles | 12 to 20 | Both |
| Crickets | 14, 16 | Both |
| Hoppers | 10, 12, 14 | Primarily Spruce |
| Inch Worms | 14, 16 | Both |