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Insects

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Techniques

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Letort Spring Run · access

Cumberland County, Pennsylvania, United States · United States

By The Fly Desk · Published 2026-10-09

Licence and rules

Licence and rules. Pennsylvania requires a fishing licence from 16, plus a trout/salmon permit for any trout water. Large parts of the Letort are private or leased water managed by local clubs; the public stretches are marked and should be respected strictly, because access here has been lost before and regained only slowly. Catch-and-release is the norm throughout.

Season

Best from April to June and again in October; midsummer weed growth makes it nearly unfishable

Flow

40–90 cfs, almost constant because the source is a limestone spring

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.

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