The Trout In Its Natural Upland Habitat.
It is necessary to fully understand the extent of the brown trouts habitat in Ireland if it is to be managed effectively. The trouts habitat is extensive, diverse and valuable. More than 50 river catchments compromising 84,000 kilometres of river plus numerous tributaries the region also contains 2600 lakes (approx.). Although not all of this is classed as upland habitat.
The natural habitat for the wild brown trout is mainly small streams which are important for spawning and nursery areas. These generally flow to and from lakes, 98% of which are less than 20 hectares in area. These streams also provide vital areas for feeding upon invertebrate . Brown trout are also found in larger streams and rivers such as the Corrib, and in these larger stretches the decline in numbers has been made more significant through concern amongst riparian owners and anglers and not just environmentalists.