This council publicly notified the Water Plan on 28 February 1998. Following submissions, hearings and appeals, ORC made the plan operative on 1 January 2004. The tables below list changes to the plan since then.
| Key Event | Date Notified | Date Decision Released | Date Operative |
| Regional Plan: Water for Otago (the Water Plan) | 28 Feb 1998 | 7 Jul 2000 | 1 Jan 2004 |
| Waitaki Catchment Water Allocation Regional Plan (This information is from ECan) |
19 Feb 2005 | 30 Sep 2005 | 3 Jul 2006 |
| Key Event | Date Notified | Date Decision Released |
Date Operative |
| Amendment 1 (NPS Freshwater Management) | 24 Jun 2011 | 24 Jun 2011 | 1 Jul 2011 |
| Amendment 2 (NES Plantation Forestry) to the Regional Plan: Water | 30 Jun 2018 | 30 Jun 2018 | 1 Jul 2018 |
| Amendment 3 (NPS Freshwater Management 2020) to the Regional Plan: Water | 5 Jun 2021 | 5 Jun 2021 | 1 Jun 2021 |
| Amendment 4 to the Regional Plan: Water | 1 Sep 2025 | N/A | 21 Aug 2025 |
| Key Event | Date Notified | Date Decision Released |
Date Operative |
| Plan Change 1A | 17 Aug 2005 | 01 Apr 2006 | 01 Aug 2006 |
| Plan Change 1B (Minimum Flows) | 20 Dec 2008 | 31 Oct 2009 | 01 Mar 2010 |
| Plan Change 1C (Water Allocation and Use) | 20 Dec 2008 | 10 Apr 2010 | 01 Mar 2012 |
| 02 Jul 2011 | 12 May 2012 | 01 Oct 2013 | |
| Plan Change 3A (Minimum Flow for Taieri River at Tiroiti) | 26 Jun 2010 | 11 Dec 2010 | 01 May 2011 |
| Plan Change 3B (Pomahaka Catchment minimum flow) | 16 Aug 2014 | 14 Feb 2015 | 01 Jun 2015 |
| Plan Change 3C (Waiwera Catchment minimum flow) | 13 Dec 2014 | 08 Aug 2015 | 01 Mar 2016 |
| Plan Change 4A (Groundwater and North Otago Volcanic Aquifer) | 18 Sep 2010 | 24 Sep 2011 | 01 Mar 2012 |
| Plan Change 4B (Groundwater allocation) | 17 May 2014 | 13 Dec 2014 | 01 Sep 2015 |
| Plan Change 4C (Groundwater management: Cromwell Terrace Aquifer) | 16 Aug 2014 | 13 Dec 2014 | 01 Sep 2015 |
| Plan Change 5A (Lindis: Integrated water management) | 08 Aug 2015 | 13 Aug 2016 | 05 Mar 2022 |
| 31 Mar 2012 | 20 Apr 2013 | 01 May 2014 | |
| Plan Change 6AA | 5 October 2019 | 8 February 2020 | 16 May 2020 |
| Plan Change 7 (Water Permits) | 18 Mar 2020 | 17 Nov 2021 | 05 Mar 2022 |
| Plan Change 8 (Omnibus Plan Change) | 06 Jul 2020 | 31 Jan 2022 and 21 Apr 2022 (for primary sector provisions) |
4 Jun 2022 (partially operative; primary sector provisions) |
| 14 Jun 2022 | 3 September 2022 (fully operative) |
Index by wetland name (140 KB)
Index map 1 – Queenstown Lakes District (376 KB)
Index map 2 – Central Otago District, Waitaki District, Dunedin City (411 KB)
Index map 3 – Clutha District (330 KB)
Map F1 - Big Boggy Swamp, Dingle Lagoon, Makarora Flat Swamp Complex, Minaret Bay Swamp (334 KB).
Map F2 - Butterfield Wetland, Matukituki Bluff Ephemeral Wetland Management Area, Scaifes Lagoon, The Neck Wetlands (286 KB).
Map F3 - Campbells Reserve Pond Margins, Diamond Lake Wetland, Kinloch Wetland, Lake Reid Wetland (280 KB).
Map F4 - Matakauri Wetland, Moke Creek Swamp, Moke Lake Bog, Little Stoney Bog (296 KB).
Map F5 - Matukituki Valley Wetland Management Area (341 KB).
Map F6 - Church Hill Wetland Complex (314 KB).
Map F7 - Mount Nicholas Lagoon, Lake Hayes Margins (293 KB).
Map F8 - Glenorchy Lagoon Wetland, Shotover River Confluence Swamp, Signal Hill Swamp (608 KB).
Map F9 - Von Valley Wetland Complex (711 KB).
Map F10 - Von Valley Wetland Complex (682 KB).
Map F11 - Dunard Inland Saline Wetland Management Area, Laws Road Swamp, Rockdale Inland Saline Wetland Management Area, Timber Creek Seepage (276 KB).
Map F12 - Blackmans Inland Saline Wetland Management Area, Long Gully Marsh, Moa Creek Inland Saline Wetland, Galloway No 1 Inland Saline Wetland Complex, Galloway No 2 Inland Saline Wetland Management Area (289 KB).
Map F13 - Lower Manorburn Dam Margins, Gilmour Road Marsh, Styx Ephemeral Wetland Management Area, Upper Black Stream Marshes (315 KB).
Map F14 - Cross Eden Creek Marsh Complex, Kirkwoods Creek Wetland Management Area (337 KB).
Map F15 - Island Block Pond Marshes, Kirk Creek Headwaters Marsh Complex, Rigney Pond Margins (277 KB).
Map F16 - Bendigo Wetland, Chapman Road Inland Saline Wetland, Conroys Dam Inland Saline Wetland Management Area, Conroys Road Inland Saline Wetland Complex (349 KB).
Map F17 - Flat Top Hill Ephemeral Wetlands, Nevis Red Tussock Fen, Schoolhouse Flat Red Tussock Fen (281 KB).
Map F18 -Hawkdun Runs Road Marsh, Hut Creek Swamps (598 KB).
Map F19 - Upper Taieri Wetlands Complex (605 KB).
Map F20 - Upper Taieri Wetlands Complex (634 KB).
Map F21 - Upper Taieri Wetlands Complex (597 KB).
Map F22 - Belmont Inland Saline Wetland Management Area, Clachanburn Marsh, Patearoa Inland Saline Wetland, Totara Creek Inland Saline Wetland, Upper Taieri Wetlands Complex (594 KB).
Map F23 - Upper Taieri Wetlands Complex (666 KB).
Map F24 - Upper Taieri Wetlands Complex (663 KB).
Map F25 - Upper Taieri Wetlands Complex (643 KB).
Map F26 - Great Moss Swamp (640 KB).
Map F27 - Boundary Creek Fen, Middle Swamp, Fortification Creek Wetland Management Area (706 KB).
Map F28 - Blackcleugh Burn Swamp, Malones Dam Margins, Glendhu Swamp, John O'Groats Hill Fen (300 KB).
Map F29 - Black Swamp, Clifton Hill Marshes, Pomahaka River Oxbow Marsh (Dalvey School Road), Pomahaka River Oxbow Marsh (Koi Creek) (266 KB).
Map F30 - Macfarlane Road Oxbow Swamp, Marana Swamp, Trig Y Bogs, Willowburn Bog (259 KB).
Map F31 - Blair Fen, Blair Swamp, Harrington Mill Road Swamp, Samson Hill Marshes, Upper Tahakopa Swamps (280 KB).
Map F32 - Hukihuki Swamp, Hungerford Point Saltmarsh, Lake Wilkie Swamp, Lenz Reserve Wetlands, Tautuku River Mouth Marsh (275 KB).
Map F33 - Catlins River Wetland, Otanomomo Tuatiki Reserve, Ratanui Swamp (259 KB).
Map F34 - Dunvegan Fen Complex, Wairepo Creek Marsh Complex (306 KB).
Map F35 - Cairn Road Bog (215 KB).
Map F36 - Cannibal Bay Road Swamp, False Islet Wetland Management Area, Tahakopa Marsh Complex (271 KB).
Map F37 - Clutha Matau Wetlands, Clutha River Mouth Lagoon, Molyneux Bay Swamp (283 KB).
Map F38 - Cheetwood Road Wetlands, Culcairn Oxbow Marsh, Finegand Lagoon Marsh (297 KB).
Map F39 - East Benhar Swamp, Lake Tuakitoto Wetland, Stirling Marsh Complex (413 KB).
Map F40 - Camp Stream Swamp, Frasers Stream Headwaters Marsh Complex, Two Stone Hill Stream Swamp (304 KB).
Map F41 - Measly Beach Wetland Complex (229 KB).
Map F42 - Akatore Creek Swamp, Coutts Gully Swamp (323 KB).
Map F43 - Governors Point Swamp, Rocky Hill Tidal Marshes, Takitoa Swamp (312 KB).
Map F44 - Henley Swamp, Waipori Boot Swamp, Waipori/Waihola Wetland Complex (837 KB).
Map F45 - Waipori Boot Swamp, Waipori/Waihola Wetland Complex (840 KB).
Map F46 - Loch Loudon Fen Complex, Loch Luella Fen Complex (822 KB).
Map F47 - Bungtown Bog, Loch Luella Fen Complex (800 KB).
Map F48 - Tokomairiro River Swamp (686 KB).
Map F49 - Hazeldale Fens, Kuriwao Saddle Fen Complex, Three Stones Fen Complex (622 KB).
Map F50 - Maclennan River Podocarp Swamp Complex, Stuarts Marsh, Tahakopa Bay Podocarp Swamp, Tahakopa River Bogs (611 KB).
Map F51 - Fernhill Marsh, Murrays Road Inland Saline Wetland Management Area, Glyn Wye Wetland Management Area, Little Boggy Swamp (276 KB).
Map F52 - Andersons Pond Margins, Old Dunstan Road Swamp, Reefs Pond Margins, Fortification Stream Headwaters Swamp (276 KB).
Map F53 - Aramoana Saltmarsh, Jennings Creek Marsh, Lamb Hill Fen Complex, Swampy Summit Swamp, Whareakeake Marsh (337 KB).
Map F54 - Lower Otokia Creek Marsh, McKays Triangle Wetland, Hoopers Inlet Swamp, Tomahawk Lagoon (298 KB).
Map F55 - Peat Moss Hills Fen Complex, Sutton Salt Lake Wetland Management Area (274 KB).
Map F56 - Ellison Saltmarsh, McGregor Swamp, McLachlan Road Marsh, Hawksbury Lagoon, Waikouaiti River Estuary Wetland Complex (331 KB).
Map F57 - Kaikorai Lagoon Swamp, Braeside Swamp, Otokia Swamp (322 KB).
Map F58 - Maungatua Summit Wetland Management Area, Office Creek Seepage (742 KB).
Map F59 - Devils Bridge Wetland, Nenthorn Ridge Wetland Management Area, Paddys Rock Ephemeral Tarn, Shag Point Dam Margins, Shag River Estuary Swamp (293 KB).
Map F60 - All Day Bay Lagoon, Kakaho Creek Swamp, Kemp Road Lagoon, Waianakarua River Estuary Swamp (242 KB).
Map F61 - Te Hua Taki Wetland, Upper Waiareka Creek Swamp, Tavora Wetland, Papanui Inlet Saltmarsh (263 KB).
Map F62 - Pleasant River Estuary Wetland Complex, Red Bank Wetland Management Area (357 KB).
Map F63 - Black Rock Marshes, Okia Flat Wetland Management Area, Te Matai Marsh Complex (333 KB).
Section 1: I Series Maps
Map I-1 – Kakanui-Kauru Aquifer (1 MB)
Map I-2 – Shag Alluvium Aquifer (2 MB)
Map I-3 – Wakatipu Basin Aquifer (2 MB)
Map I-4 – Ettrick and Roxburgh Aquifers (2 MB)
Map I-5 – Wakatipu Aquifer and Lakes Area (497 KB)
Section 2: J Series Maps