The Mississippi River is a tributary of the Ottawa River. It cover more than 200 kilometres from its source in Upper Mazinaw Lake to its confluence at the Ottawa River. The Mississippi River is home to more than 250 lakes and flows through communities and villages including Lanark, Carleton Place, Mississippi Mills (Almonte), Pakenham, and Galetta. The Mississippi River originally powered textile mills in the region. In modern times, it is known for providing hydro electric power.

Even with modern industry and advancements, the flora and fauna along the river shoreline remains abundant. Homeowners in the region delight in spotting the great Blue Heron, Otters, and many of the province’s at-risk turtle species including Blanding’s, Snapping, Musk and Map.