Ontario

Ontario joined the Flood Damage Reduction Program in 1978 signing an agreement which combined all aspects of the program in one document – a Flood Damage Reduction Program Agreement. This program built upon the mapping begun by the province and the Conservation Authorities in the 1950s. Municipalities or Conservation Authorities, where they existed, were partners with the federal and provincial governments in the FDRP mapping process and paid a portion of the cost.

In Ontario, the flood risk area is defined by the flooding hazard limit. Depending on location in the province, the flooding hazard limit is determined by the 100-year peak flow, a regional storm, or the highest observed flood. In some communities, the two zone approach is used with a floodway and flood fringe being designated. There is also a provision to identify Special Policy Areas (SPA). An SPA is an area within a community that has historically existed in the flood plain and where strict adherence to certain province-wide policies concerning new development would result in social and economic hardships for the community. As a result, the special status allows controlled development under the condition that structures are protected to an established minimum flood level based on risk analysis. To date that level in all SPAs exceeds the federal minimum 100-year flood.

Ontario has been the most active participant in the mapping program with over 270 communities designated.

Designations

Is your property in an area that is subject of recurrent and severe flooding?

If your community is listed below, it is in a "Designated" area. Provide the designation name to the contact when requesting a flood risk map.

Adjala (Township)	Toronto	Designated 1982-12
Ajax	Lake Ontario Shoreline, Toronto	Designated 1989-08
Ajax	Toronto	Designated 1982-12
Alliston	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Almonte	Mississippi River	Designated 1989-05
Amabel (Township)	Sauble River	Designated 1991-09	44 40 / 81 15
Amherstburg	Essex Region Watershed	Designated 1994-04
Amherstburg	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Ancaster	Ancaster / Sulphur Creeks	Designated 1991-03	43 13 / 79 59
Anderdon (Township)	Essex Region Watershed	Designated 1994-04
Anderdon (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Angus	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Anson, Hindon and Minden (Township)	Gull River	Designated 1989-07
Arthur	Conestogo River	Designated 1988-03	43 50 / 80 32
Ashfield (Township)	Lake Huron Shoreline, N°s 1 and 2 (Maitland Valley CA)	Designated 1987-03
Ashfield (Township), remainder	Lake Huron Shoreline, N° 3 (Maitland Valley CA)	Designated 1990-01
Atikokan (Township)	Atikokan	Designated 1986-03	48 45 / 91 37
Baden Settlement Area	Baden Creek	Designated 1991-09	43 24 / 80 39
Bancroft	York River at Bancroft	Designated 1991-03	45 03 / 71 51
Beckwith (Township)	Mississippi River	Designated 1989-05
Belle River	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Belleville	Moira River, Map #4 (Hwy. 401 to Bay of Quinte)	Designated 1989-03	44 10 / 77 23
Belleville East	Bell Creek (City of Belleville)	Designated 1988-03	44 10 / 77 21
Belleville East	Upper Bell Creek	Designated 1991-03	44 11 / 77 20
Belleville North	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03
Bensfort Bridge	Otonabee River	Designated 1989-05	44 11 / 78 16
Bigwood (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Black Rapids	Gananoque River	Designated 1989-05
Blandford – Blenheim (Township)	Nith River	Designated 1988-03
Bourget	Bear Brook Creek	Designated 1993-03	45 26 / 75 09
Bracebridge	Muskoka River, Bracebridge	Designated 1989-08	45 03 / 79 10
Bradford	Holland River	Designated 1991-09
Braeside	McNab (Ottawa River shoreline)	Designated 1988-10	45 28 / 76 24
Brampton	Credit Valley CA	Designated 1991-03
Brampton	Toronto	Designated 1982-12
Brighton	Lower Trent Region	Designated 1987-03
Brighton (Township)	Lower Trent Region	Designated 1987-03
Brock (Township)	Simcoe Lake	Designated 1989-03
Burlington	Halton Region	Designated 1991-09	43 19 / 79 47
Burnt River	Somerville / Burnt River	Designated 1992-03	44 41 / 78 42
Caldwell (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Caledon	Credit Valley CA	Designated 1991-03
Caledon (Township)	Toronto	Designated 1982-12
Cambridge	Speed and Eramosa Rivers	Designated 1994-04
Cambridge (Township)	Grand River	Designated 1987-03	43 23 / 80 19
Campbellford (Township)	Lower Trent Region	Designated 1987-03
Campbelltown	Otonabee River	Designated 1989-05
Carleton Place	Mississippi River	Designated 1989-05	45 08 / 76 09
Chapleau (Township)	Kebsquasheshing and Nebskwashi Rivers, Baciareli, Chapleau	Designated 1990-01	47 50 / 83 24
Charleston	Gananoque River	Designated 1989-05
Charlottenburgh (Township)	Raisin Region Conservation Authority Streams	Interim designation 1989-05
Chelmsford	Nickel District	Designated 1987-03
Cleland (Township)	Nickel District	Designated 1987-03
Colborne	Lower Trent Region	Designated 1987-03
Colborne (Township)	Lake Huron Shoreline, N°s 1 and 2 (Maitland Valley CA)	Designated 1987-03
Colchester North (Township)	Essex Region Watershed	Designated 1994-04
Colchester South (Township)	Essex Region Watershed	Designated 1994-04
Colchester South (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Collingwood	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03	44 29 / 80 13
Commanda (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Cornwall (Township)	Raisin Region Conservation Authority Streams	Interim designation 1989-05	45 05 / 74 50
Cosby (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Creemore	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Delamere (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Delta	Gananoque River	Designated 1989-05
Drayton	Conestogo River	Designated 1988-03
Dresden	Dresden	Designated 1988-03	45 35 / 82 11
Dryden	Wabigoon River and Lake, Swanson Creek, Dryden	Designated 1989-05	49 47 / 92 50
Dummer (Township)	Indian River	Designated 1989-05
Dunnet (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Dunnville (Town)	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03
Durham (Reg.Mun.)	Toronto	Designated 1982-12
Elzevir and Grimsthorpe (Township)	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03
Eramosa (Township)	Speed and Eramosa Rivers	Designated 1994-04
Erin (Township)	Credit Valley CA	Designated 1991-03
Ernestown (Township)	Millhaven Creek	Designated 1991-09
Espanola	Espanola	Designated 1987-08	46 15 / 81 46
Essa (Township)	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Flamborough (Township)	Halton Region	Designated 1991-09
Fort Erie	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Frankford	Lower Trent Region	Designated 1987-03	44 12 / 77 36
Gananoque	Gananoque River	Designated 1989-05	44 20 / 76 10
Georgina (Township)	Simcoe Lake	Designated 1989-03
Glanbrook (Township)	Twenty Mile Creek (Niagara CA)	Designated 1989-03	43 08 / 79 44
Glanbrook (Township)	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Gloucester (Township)	Rideau River	Designated 1991-03
Goderich (Town)	Lake Huron Shoreline, N°s 1 and 2 (Maitland Valley CA)	Designated 1987-03	43 45 / 81 43
Goderich (Township)	Lake Huron Shoreline, N°s 1 and 2 (Maitland Valley CA)	Designated 1987-03
Gosfield South (Township)	Essex Region Watershed	Designated 1994-04
Gosfield South (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Goulais Bay	Goulais River	Designated 1987-08
Goulais River	Goulais River	Designated 1987-08
Grand Bend	Lucan, Crediton and Grand Bend	Designated 1991-03
Guelph	Speed and Eramosa Rivers	Designated 1994-04	43 33 / 80 15
Guelph (Township)	Speed and Eramosa Rivers	Designated 1994-04
Gwillimbury, East	Holland River	Designated 1991-09
Gwillimbury, West (Township)	Holland River	Designated 1991-09
Haldimand (Township)	Lower Trent Region	Designated 1987-03
Halton	Credit Valley CA	Designated 1991-03
Halton (Reg.Mun.)	Halton Region	Designated 1991-09
Halton Hills	Halton Region	Designated 1991-09
Hamilton	Twenty Mile Creek (Niagara CA)	Designated 1989-03
Hamilton-Wentworth (Reg.Mun.)	Halton Region	Designated 1991-09
Hastings (Township)	Lower Trent Region	Designated 1987-03
Hawkesbury	Ottawa River / Hawkesbury	Designated 1990-11	45 36 / 74 37
Hawkesbury, East (Township)	Ottawa River / Hawkesbury	Designated 1990-11
Hawkesbury, West (Township)	Ottawa River / Hawkesbury	Designated 1990-11
Hearst	Mattawishkwia River, Hearst	Designated 1990-01	49 41 / 83 40
Herschel (Township)	York River at Bancroft	Designated 1991-03
Hornepayne (Township)	Hornepayne	Designated 1988-08	49 13 / 84 47
Huntingdon (Township)	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03
Huntsville	Big East River at Huntsville	Designated 1991-03	45 20 / 79 13
Ignace (Township)	Agimak River and Lake, Ignace	Designated 1989-05	49 25 / 91 40
Ingersoll	Thames River; Pottersburg, Mud, Medway and Dingman Creeks; Avon River	Designated 1993-03
Iron Bridge	Mississagi River, Iron Bridge	Designated 1989-05	46 17 / 83 14
James (Township)	Elk Lake (James Twp.)	Designated 1991-03	47 44 / 80 20
Kanata	Mississippi River	Designated 1989-05
Kanata	Ottawa River, Ottawa-Carleton	Designated 1989-05
King (Township)	Holland River	Designated 1991-09
King (Township)	Toronto	Designated 1982-12
Kingston	Little Cataraqui Creek (Kingston Township)	Designated 1988-03
Kingston East	Butternut Creek	Designated 1994-04	44 17 / 76 25
Kingston (Township)	Little Cataraqui Creek (Kingston Township)	Designated 1988-03	44 18 / 76 34
Kingston (Township)	Millhaven Creek	Designated 1991-09
Kingsville	Essex Region Watershed	Designated 1994-04
Kingsville	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Kinmount	Somerville / Burnt River	Designated 1992-03
Kirby's Corner	Goulais River	Designated 1987-08
Lakefield	Lakefield / North Monaghan	Designated 1987-03	44 26 / 78 16
Leamington	Essex Region Watershed	Designated 1994-04
Leamington	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04	42 03 / 82 36
London	Thames River; Pottersburg, Mud, Medway and Dingman Creeks; Avon River	Designated 1993-03	42 59 / 81 14
London (Township)	Thames River; Pottersburg, Mud, Medway and Dingman Creeks; Avon River	Designated 1993-03
Loughborough (Township)	Millhaven Creek	Designated 1991-09
Lucan	Lucan, Crediton and Grand Bend	Designated 1991-03	43 11 / 81 24
Lutterworth (Township)	Gull River	Designated 1989-07
Lyndhurst	Gananoque River	Designated 1989-05
MacPherson (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Maidstone (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Malden (Township)	Essex Region Watershed	Designated 1994-04
Malden (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Maple Grove	Gananoque River	Designated 1989-05
Maple Rock	Gananoque River	Designated 1989-05
Markham	Toronto	Designated 1982-12
Martland (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Mason (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Matheson	Black River	Designated 1993-03	48 32 / 80 28
Mattawa	Mattawa River	Interim designation 1991-03	46 19 / 78 42
McIntosh Mills	Gananoque River	Designated 1989-05
McNab (Township)	McNab (Ottawa River shoreline)	Designated 1988-10
Mersea (Township)	Essex Region Watershed	Designated 1994-04
Mersea (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Milton	Halton Region	Designated 1991-09
Minden	Gull River	Designated 1989-07	44 55 / 78 43
Mississauga	Credit Valley CA	Designated 1991-03	43 35 / 79 39
Mississauga	Toronto	Designated 1982-12
Mono (Township)	Toronto	Designated 1982-12
Mowat (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Nepean	Mississippi River	Designated 1989-05
Nepean	Ottawa River, Ottawa-Carleton	Designated 1989-05
Nepean	Rideau River	Designated 1991-03
New Hamburg	Nith River	Designated 1988-03	43 23 / 80 42
Newmarket	Holland River	Designated 1991-09	44 03 / 79 28
Niagara Falls	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Niagara-on-the-Lake	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03
Nickel Centre	Nickel District	Designated 1987-03
Nipigon (Township)	Nipigon	Designated 1986-03	49 01 / 88 16
Nipissing (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
Nolalu	Whitefish River	Interim designation 1993-03	48 17 / 89 49
North Bay	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
North Dumfries (Township)	Grand River	Designated 1987-03
North Dumfries (Township)	Nith River	Designated 1988-03
North Himsworth (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
North Monoghan (Township)	Lakefield / North Monaghan	Designated 1987-03
Nottawasaga (Township)	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Oakville	Halton Region	Designated 1991-09
Odessa	Millhaven Creek	Designated 1991-09	44 17 / 76 43
Onaping Falls	Nickel District	Designated 1987-03
Orangeville	Credit Valley CA	Designated 1991-03
Orillia	Severn River	Designated 1994-04	44 37 / 79 25
Oro (Township)	Nottawasaga, Silver, Willow and Spring Creeks, Mad River	Designated 1991-03
Osgoode (Township)	Rideau River	Designated 1991-03
Oshawa East	Robinson Creek (Central Lake Ontario CA)	Designated 1994-04	43 53 / 78 47
Osnabruck (Township)	Raisin Region Conservation Authority Streams	Interim designation 1989-05
Ottawa	Ottawa River, Ottawa-Carleton	Designated 1989-05	45 25 / 75 42
Ottawa	Rideau River	Designated 1991-03
Ottawa-Carleton (Reg.Mun.)	Mississippi River	Designated 1989-05
Ottawa-Carleton (Reg.Mun.)	Ottawa River, Ottawa-Carleton	Designated 1989-05
Ottawa-Carleton (Reg.Mun.)	Rideau River	Designated 1991-03
Outlet	Gananoque River	Designated 1989-05
Paipoonge (Township)	Kaministiquia River	Designated 1983-08
Pakenham (Township)	Mississippi River	Designated 1989-05
Pelham	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Petawawa (Township)	Petawawa (Ottawa River shoreline)	Designated 1988-10	45 52 / 77 13
Peterborough	Peterborough	Designated 1991-09	44 18 / 78 19
Pickering	Toronto	Designated 1982-12
Port Stanley	Kettle Creek, Port Stanley	Designated 1989-05	42 40 / 81 13
Portland (Township)	Millhaven Creek	Designated 1991-09
Puslinch (Township)	Grand River	Designated 1987-03
Puslinch (Township)	Speed and Eramosa Rivers	Designated 1994-04
Ramsay (Township)	Mississippi River	Designated 1989-05
Rawden (Township)	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03
Red Rock (Township)	Big Trout Creek	Designated 1993-03	48 56 / 88 15
Rednersville (Ameliasburg Township)	Lake Ontario Shoreline / Bay of Quinte	Designated 1993-03	44 07 / 77 27
Richmond Hill	Toronto	Designated 1982-12
Rideau (Township)	Rideau River	Designated 1991-03
Riverbank	Conestogo River	Designated 1988-03
Rochester (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Rockland	Ottawa River, Ottawa-Carleton	Designated 1989-05
Roxborough (Township)	Raisin Region Conservation Authority Streams	Interim designation 1989-05
Sandwich South (Township)	Essex Region Watershed	Designated 1994-04
Sandwich South (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Sandwich West (Township)	Essex Region Watershed	Designated 1994-04
Sandwich West (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Sandy Bay Corner	Gananoque River	Designated 1989-05
Sault Ste. Marie	Root River, Sault Ste. Marie	Designated 1990-01	46 31 / 84 20
Schreiber (Township)	Cooks Creek, Schreiber	Designated 1989-05	48 48 / 87 15
Searchmont	Goulais River	Designated 1987-08	46 47 / 84 03
Seymour (Township)	Lower Trent Region	Designated 1987-03
Sidney (Township)	Lower Trent Region	Designated 1987-03
Smithville	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03
Somerville (Township)	Somerville / Burnt River	Designated 1992-03
Sophiasburg	Lake Ontario Shoreline / Bay of Quinte	Designated 1993-03
Southampton	Saugeen Valley / Southampton	Designated 1992-03	44 29 / 81 23
Springer (Township)	Sturgeon River / Lake Nipissing / French River	Designated 1983-03
St. Catharines	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03	43 10 / 79 15
St. Clair Beach	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Stephen (Township)	Lucan, Crediton and Grand Bend	Designated 1991-03
Stirling	Lower Trent Region	Designated 1987-03
Stoney Creek	Stoney Creek and Battlefield Creek	Designated 1993-03	43 13 / 79 46
Stratford	Thames River; Pottersburg, Mud, Medway and Dingman Creeks; Avon River	Designated 1993-03
Sturgeon Falls	Sturgeon River / Lake Nipissing / French River	Designated 1983-03	46 22 / 79 55
Sudbury	Nickel District	Designated 1987-03	46 30 / 81 00
Tecumseh	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Thedford	Thedford / Klondyke	Designated 1991-03	43 09 / 81 51
Thessalon	Thessalon	Designated 1987-08	46 15 / 83 34
Thorold	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Thunder Bay	Kaministiquia River	Designated 1983-08	48 24 / 89 19
Thurlow (Township)	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03
Thurlow (Township)	Upper Bell Creek	Designated 1991-03
Tilbury North (Township)	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
Toronto, Metropolitan	Toronto	Designated 1982-12	43 40 / 79 23
Toronto, Metropolitan (Reg.Mun.)	Lake Ontario Shoreline, Toronto	Designated 1989-08	43 40 / 79 19
Trenton	Lower Trent Region	Designated 1987-03
Tweed, Hungerford (Township)	Moira River (Hwy. 401 north to Hwy. 7) - Maps #1,2,3	Designated 1988-03	44 29 / 77 19
Uxbridge (Township)	Simcoe Lake	Designated 1989-03	44 06 / 79 07
Uxbridge (Township)	Toronto	Designated 1982-12
Valley East	Nickel District	Designated 1987-03
Vanier	Rideau River	Designated 1991-03	45 26 / 75 40
Vaughan	Toronto	Designated 1982-12
Wainfleet (Township)	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Walden (Township)	Nickel District	Designated 1987-03
Wallace Point	Otonabee River	Designated 1989-05
Wanup (Township)	Nickel District	Designated 1987-03
Warkworth	Lower Trent Region	Designated 1987-03
Warsaw	Indian River	Designated 1989-05	44 26 / 78 08
Welland	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03
Welland	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01	42 59 / 79 15
West Carleton (Township)	Mississippi River	Designated 1989-05
West Carleton (Township)	Ottawa River, Ottawa-Carleton	Designated 1989-05
West Lincoln (Township)	Twenty Mile Creek (Niagara CA)	Designated 1989-03
West Lincoln (Township)	Draper / One Mile / Francis / Twenty Mile and Oswego Creeks (Niagara CA)	Designated 1992-03
West Lincoln (Township)	Welland River, Forks, Black and Beaver Creeks	Designated 1990-01
Westmeath (Township)	Ottawa River (Westmeath Township)	Designated 1994-04	45 49 / 76 53
Westminster (Township)	Thames River; Pottersburg, Mud, Medway and Dingman Creeks; Avon River	Designated 1993-03
Whitchurch-Stouffville	Holland River	Designated 1991-09
Whitchurch-Stouffville	Toronto	Designated 1982-12
White River	White River	Designated 1982-08	48 36 / 85 17
Wilmont (Township)	Baden Creek	Designated 1991-09
Wilmont (Township)	Nith River	Designated 1988-03
Windsor	Essex Region Watershed	Designated 1994-04	42 18 / 83 01
Windsor	Lake Erie Shoreline (Essex Region CA)	Interim designation 1994-04
York (Reg.Mun.)	Toronto	Designated 1982-12

Program information

To obtain a map, contact:

1. the engineering or planning department of the city or regional municipality;
2. the appropriate Conservation Authority; or,
3. the regional office of the Ministry of Natural Resources. 

For more information, contact:

Federal government

Sustainable Water Management
Environmental Stewardship Branch
Environment Canada
Ottawa, Ontario  K1A 0H3
Tel.: 819-997-2307
Fax: 819-994-0237

Provincial government

Water Resources
Ontario Ministry of Natural Resources 
300 Water Street
P.O. Box 7000
Peterborough, Ontario  K9J 8M5
Tel.: 705-755-1955
Fax: 705-755-1267

The information on this page is for reference and education only. We do our best to keep the data complete and up-to-date, but assume no responsibility for any omissions or outdated information. If you require official information, please contact a member of the Steering Committee or the appropriate government official identified on these pages.

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