The current drainage scheme was engineered by Major Percy Shepherd and was enabled by the Lough Neagh and Lower Bann Drainage and Navigation Act (Northern Ireland) 1955.
O actual plan de drenaxe foi enxeñado por Percy Shepherd e foi permitido pola Acta de Navegación e Drenaxe no lago Neagh e o Bann Baixo de Irlanda do Norte de 1955..