| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 2(2) | words substituted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20(1)(a) | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 2(2) | words substituted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20(1)(b) | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 2(2) | words inserted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20(1)(c) | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 2(2) | words inserted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20(1)(d) | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 2(2B) | words inserted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20(1) | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 12 12ZA 12A-12I | substituted for art. 12-12H | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 21 | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 13 13A | substituted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 22 | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | art. 16 | substituted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 23 | Yes | |
| Drainage (Northern Ireland) Order 1973 | 1973 No. 69 | Sch. 2A-2C | substituted | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | Sch. | Yes | |
| Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2006 | 2006 No. 34 | reg. 4-15 | revoked with savings | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 25(1)(a) | Yes | |
| Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2006 | 2006 No. 34 | reg. 18-21 | revoked with savings | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 25(1)(b) | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 2 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 3 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 4 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 5 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 6 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 7 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 8 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 9 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 10 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 11 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 12 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 13 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 14 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 15 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 16 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 17 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 18 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 19 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 20 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 21 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 22 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 23 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 24 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 25 | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |
| The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | Sch. | coming into force | The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017 | 2017 No. 88 | reg. 1 | Yes | |