A limestone river rising from Lough Ennell and running through Offaly to the Shannon, with wild brown trout, a croneen (migratory trout) presence and small summer salmon runs. Classic midland water, best before the summer weed.
Hatches & food
EPA river-invertebrate monitoring confirms mayflies, stoneflies, caddis, aquatic diptera and freshwater crustaceans are present across the Brosna's monitored segments. This is food-presence evidence only, drawn from kick samples, and doesn't establish emergence timing or the strength of any visible hatch.
- Limestone