| Centennial Lake Provincial Nature Reserve | |
| Iucn Category: | II |
| Map: | Canada Southern Ontario |
| Relief: | 1 |
| Location: | Greater Madawaska, Ontario, Canada |
| Coordinates: | 45.2356°N -76.9908°W |
| Coords Ref: | [1] |
| Area Ha: | 530 |
| Operator: | Ontario Parks |
| Url: | https://www.ontarioparks.com/park/centenniallake |
The Centennial Lake Provincial Nature Reserve (also known as Centennial Lake Provincial Park) is a provincial park[2] located in the municipality of Greater Madawaska, Renfrew County, in Eastern Ontario, Canada.[3] [4] [5] [6] The 530ha reserve was created in 1989 and is managed by Ontario Parks.
The park consists of 5 non-contiguous parts. The majority of the park is a section of land north of Black Donald Lake surrounding Oakhill Lake and bordered on the east by the Black Donald Creek; another part is the largest island in Black Donald Lake, and the remaining 3 parts are portions of three smaller islets in the same lake.
The park protects unusual geological features and many rare plant species, including the Purple cliffbrake (Pellaea atropurpurea). It is a non-operating park, meaning there are no facilities or services.[2]