The Water Framework Directive (WFD) required Northern
Ireland to define both surface and groundwaters as a coherent set of
hydrological units.These units would
then be monitored and managed to prevent deterioration in water quality and
aquatic ecosystems through the implementation a programme of measures to drive
improvements.This map displays Northern
Ireland lakes which are greater than 50ha, which are assessed under WFD
legislation and have been reported to EU from 2016.