The Water (Northern Ireland) Order 1999

2.  Works in connection with waterways, including—

(a) the cleansing, widening, deepening, covering or otherwise improving of existing waters;

(b) the dredging and maintenance of channels;

(c) the cutting of new drains where required;

(d) the abstraction from any source of any water necessary to the purposes of navigation;

(e) the construction of locks, dams, culverts, overflow culverts, pumping stations, aqueducts or viaducts;

(f) the raising and repairing of existing embankments, and the construction of new embankments;

(g) the sinking of pumping sumps;

(h) the construction and repairing of sluices or valves;

(i) the removal and disposal of old spoil banks;

(j) the construction of hydro-electric power stations in connection with any pumping station or pumping sump.