[2][3] This shallow lake was formed when Colonel John By built the Rideau Canal.

[1][3] The canal eventually flows via the Cataraqui River to Lake Ontario.

[4][5] Skycroft Campground Resort is located at the west end of Opinicon Lake.

Since 1958 Skycroft has been a sought after campground hosting visitors from all over the world wishing to explore the area.

In 2010, the James H. Fullard Nature Reserve was created, situated on Sugarbush Island.