Provincially Significant Wetlands


Provincially Significant Wetlands (PSWs) are those areas identified by the province as being the most valuable. They are determined by a science-based ranking system known as the Ontario Wetland Evaluation System (OWES). This Ministry of Natural Resources (MNR) framework provides a standardized method of assessing wetland functions and societal values, which enables the province to rank wetlands relative to one another. This information is provided to planning authorities to support the land use planning process.

The Provincially Significant Wetlands found in Renfrew County are represented by yellow markers on
the Renfrew County Natural Areas Map.


Madawaska River Watershed Wetlands

Balmer Lake
A Non-Provincially significant wetland, composed of two wetland types (53% swamp and 47% marsh)
Conroy Marsh

A Provincially significant wetland complex, made up of nine individual wetlands, composed of three wetland types (28.5% fen, 43.5% swamp, and 28% marsh) 

Constant Lake

A Non-Provincially significant wetland, composed of three wetland types (7% bog, 34% swamp and 59% marsh) 

Constant Lake at Balaclava

A Non-Provincially significant wetland, composed of three wetland types (7% bog, 34% swamp and 59% marsh) 

Donnelly's Bay

A Provincially significant wetland, composed of three wetland types (17% bog, 37% swamp and 46% marsh) 

Ferguson Lake

A Provincially significant wetland, composed of three wetland types (15% bog, 70% swamp and 15% marsh) 

Grassy Bay

A Provincially significant wetland, composed of three wetland types (8% bog, 23% swamp and 69% marsh) 

Perrault Lake

A Non-Provincially significant wetland complex, made up of two individual wetlands, composed of three wetland types (32% bog, 59% swamp and 9% marsh)

Shamrock Wetland

A Non-Provincially significant wetland complex, made up of four individual wetlands, composed of three wetland types (20% bog, 64% swamp and 16% marsh) 

Streich Lake

A Provincially significant wetland, composed of two wetland types (65% swamp and 35% marsh) 

White Lake Fen

A Provincially significant wetland, composed of four wetland types (34% bog, 13% fen, 10% swamp and 43% marsh) 

White Lake- Lowney Lake Wetland Complex
A Provincially significant wetland.


Bonnechere River Watershed Wetlands

Cochrane Creek

A Non-Provincially significant wetland, composed of three wetland types (14% bog, 80.5% swamp and 5.5% marsh)

Horton Lake/Deli's Lake

A Provincially significant wetland, composed of two wetland types (58% swamp and 42% marsh)

Killaloe Swamp
A Provincially significant wetland.
Reid Lake/Miller Lake

A Provincially significant wetland, composed of two wetland types (44% swamp and 56% marsh)

Samally Lake

A Provincially significant wetland, composed of two wetland types (59% swamp and 41% marsh)

Sherwood Marsh
A Provincially significant wetland.
Silver Creeek Wetland

A Provincially significant wetland, composed of three wetland types (46% bog, 52% swamp and 2% marsh)

Wilber Lake

A Provincially significant wetland, composed of three wetland types (2% bog, 32% swamp and 66% marsh)



Snake River Watershed Wetlands

Lake Dore

A Provincially significant wetland, composed of two wetland types (62% swamp and 38% marsh)

Mink Creek

A Non-Provincially Significant wetland, composed of two wetland types (88% swamp and 12% marsh)

Snake River Marsh

A Provincially significant wetland, composed of two wetland types (84% swamp and 16% marsh)



Muskrat River Watershed Wetlands

Cobden Marsh

A Provincially significant wetland, composed of two wetland types (39% swamp and 61% marsh)

Green Lake

A Non-Provincially significant wetland, composed of three wetland types (35% bog, 48% swamp and 16% marsh)

Mud Lake/Mud Creek

A Provincially significant wetland, composed of two wetland types (80% swamp and 20% marsh)

Muskrat Lake Complex #1, 2 and 3
A Provincially significant wetland.


Ottawa River Watershed Catchment Wetlands

Bellow's Bay

A Provincially significant wetland, composed of two wetland types (55% swamp and 45% marsh)

Bonnechere Rivermouth

A Provincially significant wetland, composed of two wetland types (26% swamp and 74% marsh)

Black Bay Wetland

A Provincially significant wetland, composed of two wetland types (94% swamp and 6% marsh)

Grants Creek Marsh

A Provincially significant wetland complex, made up of three individual wetlands, composed of three wetland types (24% fen, 23% swamp and 54% marsh)

Hazley Bay/Lisk Bay

A Provincially significant wetland complex, made up of 14 individual wetlands, composed of two wetland types (26% swamp and 74% marsh)

Little Lakes

A Non-Provincially significant wetland, composed of three wetland types (4% bog, 66% swamp and 30% marsh)

Nopoming

A Provincially significant wetland, composed of three wetland types (50% fen, 25% swamp and 25% marsh)

Westmeath Bog

A Provincially significant wetland, composed of three wetland types (23% swamp, 5% marsh and 72% bog) 



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Name

Balmer Lake
Bellow’s Bay
Bonnechere Rivermouth 
Black Bay Wetland
Cobden Marsh 
Cochrane Creek 
Conroy Marsh
 
Constant Lake 
Constant Lake at Balaclava 
Donnelly’s Bay 
Ferguson’s Lake 
Grants Creek Marsh 
Grassy Bay 
Green Lake 
Hazley Bay/Lisk Bay 
Horton Lake/Deil’s Lake 
Killaloe Swamp
 

Lake Dore 
Little Lakes 
Mink Creek 
Mud Lake/Mud Creek 
Muskrat Lake Wetland Complex #1
Muskrat Lake Wetland Complex #2
Muskrat Lake Wetland Complex #3
Nopoming 
Perrault Creek/Constant Creek
Perrault Lake
Reid Lake 
Reid Lake/Miller Lake 
Samally Lake 
Shamrock Wetland 
Sherwood River 
Silver Creek Wetland 


Snake River Wetland 
Streich Lake 
Westmeath Bog 
White Lake Fen 
Wilber Lake 
Municipality

Greater Madawaska
Whitewater
Horton
Petawawa
Whitewater
North Algona Wilberforce
Brudenell, Lyndoch & Raglan; and
Madawaska Valley
Bonnechere Valley
Bonnechere Valley
McNab/Braeside
Greater Madawaska
Head, Clara & Maria
Greater Madawaska
North Algona Wilberforce
Laurentian Valley; Whitewater
Horton; McNab/Braeside
Killaloe, Haggarty & Richards; and
North Algona Wilberforce; and
Bonnechere Valley
North Algona Wilberforce
Whitewater
Admaston Bromley
Laurentian Valley; Whitewater
Whitewater
Whitewater
Admaston Bromley; Whitewater 
Arnprior
Admaston Bromley
Admaston Bromley
Admaston Bromley
Admaston Bromley
Admaston Bromley
Admaston Bromley
Madawaska Valley
North Algona Wilberforce; and
Killaloe, Haggarty & Richards; and
Bonnechere Valley
Admaston Bromley; Whitewater
Admaston Bromley
Whitewater
McNab/Braeside
Bonnechere Valley; and 
North Algona Wilberforce
Significance

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White Lake Fen - O
nly a small portion extends into Renfrew County.  These significant wetlands contain cedar 
swamp as well as the best example of a fen in the Ottawa Valley.  Fens are characterized by a high water 
table with slow internal drainage by seepage down to low gradients. The surface waters may be acidic or 
alkaline and are not as low in nutrients as bogs and as a result are more productive. Sedges dominate with a 
few shrubs and trees. 


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