Letort Spring Run · hatch chart
Best from April to June and again in October; midsummer weed growth makes it nearly unfishable
By month
JanFebMarAprMayJunJulAugSepOctNovDec
| Month | Insect | Stage | Size | Time | Intensity |
|---|---|---|---|---|---|
| Apr | Grannom caddis (Brachycentrus) | Adult | #14-16 | 13:00-16:00 | |
| May | Scuds and sowbugs | All stages | #14-18 | All day | |
| May | Sulphur (Ephemerella invaria) | Dun | #16 | 19:00-21:00 | |
| Jun | Ants (Formicidae) | Flying ant | #16-18 | 10:00-17:00 | |
| Jun | Beetles (Coleoptera) | Adult | #14-16 | 11:00-16:00 | |
| Sep | Cress bug and scud | All stages | #16-18 | All day | |
| Oct | Blue-Winged Olive (Baetis) | Dun | #20 | 13:00-16:00 |
Flow and visibility
The Letort's flow barely changes — 40 to 90 cfs in a flood year, and rarely more than 120. That stability is the whole story: it means no dirty water to hide you, no rising fish to indicate a hatch, and a need to watch individual trout rather than read the surface. By late July the weed growth closes most of the channels and the creek becomes unfishable until autumn die-back.
The insect plate
